diff --git a/desktop/app/package.json b/desktop/app/package.json
index a1b11e175..d509562ad 100644
--- a/desktop/app/package.json
+++ b/desktop/app/package.json
@@ -22,7 +22,6 @@
     "@tanishiking/aho-corasick": "^0.0.1",
     "@types/archiver": "^5.1.1",
     "@types/uuid": "^8.3.1",
-    "JSONStream": "^1.3.1",
     "adbkit": "^2.11.1",
     "adbkit-logcat": "^2.0.1",
     "antd": "4.16.8",
@@ -69,12 +68,7 @@
     "redux": "^4.1.1",
     "redux-persist": "^6.0.0",
     "reselect": "^4.0.0",
-    "rsocket-core": "^0.0.27",
-    "rsocket-flowable": "^0.0.27",
-    "rsocket-tcp-server": "^0.0.25",
-    "rsocket-types": "^0.0.25",
     "semver": "^7.3.5",
-    "split2": "^3.2.2",
     "tmp": "^0.2.1",
     "uuid": "^8.3.2",
     "which": "^2.0.1",
diff --git a/desktop/app/src/Client.tsx b/desktop/app/src/Client.tsx
index 80b34f234..96306cf32 100644
--- a/desktop/app/src/Client.tsx
+++ b/desktop/app/src/Client.tsx
@@ -94,7 +94,7 @@ const handleError = (
   crashReporterPlugin.instanceApi.reportCrash(payload);
 };
 
-interface ClientConnection {
+export interface ClientConnection {
   send(data: any): void;
   sendExpectResponse(data: any): Promise<ClientResponseType>;
 }
diff --git a/desktop/app/src/__tests__/__snapshots__/createMockFlipperWithPlugin.node.tsx.snap b/desktop/app/src/__tests__/__snapshots__/createMockFlipperWithPlugin.node.tsx.snap
index 2e1878ed3..8c3cd2c7f 100644
--- a/desktop/app/src/__tests__/__snapshots__/createMockFlipperWithPlugin.node.tsx.snap
+++ b/desktop/app/src/__tests__/__snapshots__/createMockFlipperWithPlugin.node.tsx.snap
@@ -35,7 +35,12 @@ Object {
       "TestPlugin",
     ],
   },
-  "flipperServer": undefined,
+  "flipperServer": Object {
+    "close": [MockFunction],
+    "exec": [MockFunction],
+    "off": [MockFunction],
+    "on": [MockFunction],
+  },
   "selectedAppId": "TestApp#Android#MockAndroidDevice#serial",
   "selectedAppPluginListRevision": 0,
   "selectedDevice": Object {
diff --git a/desktop/app/src/chrome/MetroButton.tsx b/desktop/app/src/chrome/MetroButton.tsx
index 950dd4a0e..1dad79063 100644
--- a/desktop/app/src/chrome/MetroButton.tsx
+++ b/desktop/app/src/chrome/MetroButton.tsx
@@ -8,7 +8,7 @@
  */
 
 import React, {useCallback, useEffect, useState} from 'react';
-import {MetroReportableEvent} from '../server/devices/metro/MetroDevice';
+import {MetroReportableEvent} from 'flipper-common';
 import {useStore} from '../utils/useStore';
 import {Button as AntButton} from 'antd';
 import {MenuOutlined, ReloadOutlined} from '@ant-design/icons';
diff --git a/desktop/app/src/chrome/SettingsSheet.tsx b/desktop/app/src/chrome/SettingsSheet.tsx
index 19d51779e..1cb835666 100644
--- a/desktop/app/src/chrome/SettingsSheet.tsx
+++ b/desktop/app/src/chrome/SettingsSheet.tsx
@@ -38,7 +38,6 @@ type OwnProps = {
 type StateFromProps = {
   settings: Settings;
   launcherSettings: LauncherSettings;
-  isXcodeDetected: boolean;
 };
 
 type DispatchFromProps = {
@@ -356,11 +355,9 @@ class SettingsSheet extends Component<Props, State> {
 }
 
 export default connect<StateFromProps, DispatchFromProps, OwnProps, Store>(
-  ({settingsState, launcherSettingsState, connections}) => ({
+  ({settingsState, launcherSettingsState}) => ({
     settings: settingsState,
     launcherSettings: launcherSettingsState,
-    isXcodeDetected:
-      connections.flipperServer?.ios.xcodeCommandLineToolsDetected ?? false,
   }),
   {updateSettings, updateLauncherSettings},
 )(withTrackingScope(SettingsSheet));
diff --git a/desktop/app/src/server/devices/__tests__/BaseDevice.node.tsx b/desktop/app/src/devices/__tests__/BaseDevice.node.tsx
similarity index 96%
rename from desktop/app/src/server/devices/__tests__/BaseDevice.node.tsx
rename to desktop/app/src/devices/__tests__/BaseDevice.node.tsx
index 82d5e89cd..ffba287ef 100644
--- a/desktop/app/src/server/devices/__tests__/BaseDevice.node.tsx
+++ b/desktop/app/src/devices/__tests__/BaseDevice.node.tsx
@@ -7,11 +7,11 @@
  * @format
  */
 
-import * as DeviceTestPluginModule from '../../../test-utils/DeviceTestPlugin';
+import * as DeviceTestPluginModule from '../../test-utils/DeviceTestPlugin';
 import {TestUtils, _SandyPluginDefinition} from 'flipper-plugin';
-import {createMockFlipperWithPlugin} from '../../../test-utils/createMockFlipperWithPlugin';
-import {TestDevice} from '../../../test-utils/TestDevice';
-import ArchivedDevice from '../../../devices/ArchivedDevice';
+import {createMockFlipperWithPlugin} from '../../test-utils/createMockFlipperWithPlugin';
+import {TestDevice} from '../../test-utils/TestDevice';
+import ArchivedDevice from '../../devices/ArchivedDevice';
 
 const physicalDevicePluginDetails = TestUtils.createMockPluginDetails({
   id: 'physicalDevicePlugin',
diff --git a/desktop/app/src/dispatcher/application.tsx b/desktop/app/src/dispatcher/application.tsx
index 70ff82485..1e7244c04 100644
--- a/desktop/app/src/dispatcher/application.tsx
+++ b/desktop/app/src/dispatcher/application.tsx
@@ -12,7 +12,6 @@
 import {remote, ipcRenderer, IpcRendererEvent} from 'electron';
 import {Store} from '../reducers/index';
 import {Logger} from 'flipper-common';
-import {parseFlipperPorts} from '../server/utils/environmentVariables';
 import {
   importFileToStore,
   IMPORT_FLIPPER_TRACE_EVENT,
@@ -80,36 +79,4 @@ export default (store: Store, logger: Logger) => {
       }, `${IMPORT_FLIPPER_TRACE_EVENT}:Deeplink`);
     },
   );
-
-  if (process.env.FLIPPER_PORTS) {
-    const portOverrides = parseFlipperPorts(process.env.FLIPPER_PORTS);
-    if (portOverrides) {
-      store.dispatch({
-        type: 'SET_SERVER_PORTS',
-        payload: portOverrides,
-      });
-    } else {
-      console.error(
-        `Ignoring malformed FLIPPER_PORTS env variable:
-        "${process.env.FLIPPER_PORTS || ''}".
-        Example expected format: "1111,2222".`,
-      );
-    }
-  }
-
-  if (process.env.FLIPPER_ALT_PORTS) {
-    const portOverrides = parseFlipperPorts(process.env.FLIPPER_ALT_PORTS);
-    if (portOverrides) {
-      store.dispatch({
-        type: 'SET_ALT_SERVER_PORTS',
-        payload: portOverrides,
-      });
-    } else {
-      console.error(
-        `Ignoring malformed FLIPPER_ALT_PORTS env variable:
-        "${process.env.FLIPPER_ALT_PORTS || ''}".
-        Example expected format: "1111,2222".`,
-      );
-    }
-  }
 };
diff --git a/desktop/app/src/dispatcher/flipperServer.tsx b/desktop/app/src/dispatcher/flipperServer.tsx
index 38b3d3571..daefe6d10 100644
--- a/desktop/app/src/dispatcher/flipperServer.tsx
+++ b/desktop/app/src/dispatcher/flipperServer.tsx
@@ -10,10 +10,7 @@
 import React from 'react';
 import {State, Store} from '../reducers/index';
 import {Logger} from 'flipper-common';
-import {
-  FlipperServerConfig,
-  FlipperServerImpl,
-} from '../server/FlipperServerImpl';
+import {FlipperServerImpl, setFlipperServerConfig} from 'flipper-server-core';
 import {selectClient} from '../reducers/connections';
 import Client from '../Client';
 import {notification} from 'antd';
@@ -21,22 +18,23 @@ import BaseDevice from '../devices/BaseDevice';
 import {ClientDescription, timeout} from 'flipper-common';
 import {reportPlatformFailures} from 'flipper-common';
 import {sideEffect} from '../utils/sideEffect';
+import {getAppTempPath, getStaticPath} from '../utils/pathUtils';
+import constants from '../fb-stubs/constants';
 
 export default async (store: Store, logger: Logger) => {
   const {enableAndroid, androidHome, idbPath, enableIOS, enablePhysicalIOS} =
     store.getState().settingsState;
-  const server = new FlipperServerImpl(
-    {
-      enableAndroid,
-      androidHome,
-      idbPath,
-      enableIOS,
-      enablePhysicalIOS,
-      serverPorts: store.getState().application.serverPorts,
-      altServerPorts: store.getState().application.altServerPorts,
-    } as FlipperServerConfig,
-    logger,
-  );
+  setFlipperServerConfig({
+    enableAndroid,
+    androidHome,
+    idbPath,
+    enableIOS,
+    enablePhysicalIOS,
+    staticPath: getStaticPath(),
+    tmpPath: getAppTempPath(),
+    validWebSocketOrigins: constants.VALID_WEB_SOCKET_REQUEST_ORIGIN_PREFIXES,
+  });
+  const server = new FlipperServerImpl(logger);
 
   store.dispatch({
     type: 'SET_FLIPPER_SERVER',
diff --git a/desktop/app/src/dispatcher/pluginManager.tsx b/desktop/app/src/dispatcher/pluginManager.tsx
index 604dde909..118239d55 100644
--- a/desktop/app/src/dispatcher/pluginManager.tsx
+++ b/desktop/app/src/dispatcher/pluginManager.tsx
@@ -43,7 +43,7 @@ import {
   getClientsByAppName,
   getAllClients,
 } from '../reducers/connections';
-import {deconstructClientId} from '../utils/clientUtils';
+import {deconstructClientId} from 'flipper-common';
 import {clearMessageQueue} from '../reducers/pluginMessageQueue';
 import {
   isDevicePluginDefinition,
diff --git a/desktop/app/src/dispatcher/tracking.tsx b/desktop/app/src/dispatcher/tracking.tsx
index 621411fac..5393fdc92 100644
--- a/desktop/app/src/dispatcher/tracking.tsx
+++ b/desktop/app/src/dispatcher/tracking.tsx
@@ -27,7 +27,7 @@ import {
 } from '../reducers/usageTracking';
 import produce from 'immer';
 import BaseDevice from '../devices/BaseDevice';
-import {deconstructClientId} from '../utils/clientUtils';
+import {deconstructClientId} from 'flipper-common';
 import {getCPUUsage} from 'process';
 import {sideEffect} from '../utils/sideEffect';
 import {getSelectionInfo} from '../utils/info';
diff --git a/desktop/app/src/index.tsx b/desktop/app/src/index.tsx
index 800877761..c0bbc81f0 100644
--- a/desktop/app/src/index.tsx
+++ b/desktop/app/src/index.tsx
@@ -126,7 +126,6 @@ export {Rect} from './utils/geometry';
 export {Logger} from 'flipper-common';
 export {getLogger} from 'flipper-common';
 export {callVSCode} from './utils/vscodeUtils';
-export {checkIdbIsInstalled} from './server/devices/ios/iOSContainerUtility';
 export {IDEFileResolver, IDEType} from './fb-stubs/IDEFileResolver';
 export {renderMockFlipperWithPlugin} from './test-utils/createMockFlipperWithPlugin';
 export {Tracked} from 'flipper-plugin'; // To be able to use it in legacy plugins
diff --git a/desktop/app/src/init.tsx b/desktop/app/src/init.tsx
index cdd935628..7d8dd5700 100644
--- a/desktop/app/src/init.tsx
+++ b/desktop/app/src/init.tsx
@@ -51,12 +51,13 @@ import {getVersionString} from './utils/versionString';
 import {PersistGate} from 'redux-persist/integration/react';
 // eslint-disable-next-line flipper/no-electron-remote-imports
 import {ipcRenderer, remote} from 'electron';
-import {helloWorld} from 'flipper-server-core';
-import {setLoggerInstance, setUserSessionManagerInstance} from 'flipper-common';
+import {
+  setLoggerInstance,
+  setUserSessionManagerInstance,
+  GK as flipperCommonGK,
+} from 'flipper-common';
 import {internGraphPOSTAPIRequest} from './fb-stubs/user';
 
-helloWorld();
-
 if (process.env.NODE_ENV === 'development' && os.platform() === 'darwin') {
   // By default Node.JS has its internal certificate storage and doesn't use
   // the system store. Because of this, it's impossible to access ondemand / devserver
@@ -186,6 +187,8 @@ function setProcessState(store: Store) {
 }
 
 function init() {
+  // TODO: centralise all those initialisations in a single configuration call
+  flipperCommonGK.get = (name) => GK.get(name);
   const store = getStore();
   const logger = initLogger(store);
   setLoggerInstance(logger);
diff --git a/desktop/app/src/reducers/application.tsx b/desktop/app/src/reducers/application.tsx
index 618c9f5fb..4ea11e819 100644
--- a/desktop/app/src/reducers/application.tsx
+++ b/desktop/app/src/reducers/application.tsx
@@ -17,10 +17,6 @@ export type LauncherMsg = {
   message: string;
   severity: 'warning' | 'error';
 };
-export type ServerPorts = {
-  insecure: number;
-  secure: number;
-};
 
 export type StatusMessageType = {
   msg: string;
@@ -49,8 +45,6 @@ export type State = {
   windowIsFocused: boolean;
   share: ShareType | null;
   sessionId: string | null;
-  serverPorts: ServerPorts;
-  altServerPorts: ServerPorts;
   launcherMsg: LauncherMsg;
   statusMessages: Array<string>;
 };
@@ -69,20 +63,6 @@ export type Action =
       type: 'windowIsFocused';
       payload: {isFocused: boolean; time: number};
     }
-  | {
-      type: 'SET_SERVER_PORTS';
-      payload: {
-        insecure: number;
-        secure: number;
-      };
-    }
-  | {
-      type: 'SET_ALT_SERVER_PORTS';
-      payload: {
-        insecure: number;
-        secure: number;
-      };
-    }
   | {
       type: 'LAUNCHER_MSG';
       payload: {
@@ -107,14 +87,6 @@ export const initialState: () => State = () => ({
   activeSheet: null,
   share: null,
   sessionId: uuidv1(),
-  serverPorts: {
-    insecure: 8089,
-    secure: 8088,
-  },
-  altServerPorts: {
-    insecure: 9089,
-    secure: 9088,
-  },
   launcherMsg: {
     severity: 'warning',
     message: '',
@@ -163,16 +135,6 @@ export default function reducer(
       ...state,
       windowIsFocused: action.payload.isFocused,
     };
-  } else if (action.type === 'SET_SERVER_PORTS') {
-    return {
-      ...state,
-      serverPorts: action.payload,
-    };
-  } else if (action.type === 'SET_ALT_SERVER_PORTS') {
-    return {
-      ...state,
-      altServerPorts: action.payload,
-    };
   } else if (action.type === 'LAUNCHER_MSG') {
     return {
       ...state,
diff --git a/desktop/app/src/reducers/connections.tsx b/desktop/app/src/reducers/connections.tsx
index e3c6aa29e..0c385b797 100644
--- a/desktop/app/src/reducers/connections.tsx
+++ b/desktop/app/src/reducers/connections.tsx
@@ -12,16 +12,20 @@ import {produce} from 'immer';
 
 import type BaseDevice from '../devices/BaseDevice';
 import type Client from '../Client';
-import type {UninitializedClient, DeviceOS, Logger} from 'flipper-common';
+import type {
+  UninitializedClient,
+  DeviceOS,
+  Logger,
+  FlipperServer,
+} from 'flipper-common';
 import {performance} from 'perf_hooks';
 import type {Actions} from '.';
 import {WelcomeScreenStaticView} from '../sandy-chrome/WelcomeScreen';
 import {isDevicePluginDefinition} from '../utils/pluginUtils';
 import {getPluginKey} from '../utils/pluginKey';
 
-import {deconstructClientId} from '../utils/clientUtils';
+import {deconstructClientId} from 'flipper-common';
 import type {RegisterPluginAction} from './plugins';
-import {FlipperServerImpl} from '../server/FlipperServerImpl';
 import {shallowEqual} from 'react-redux';
 
 export type StaticViewProps = {logger: Logger};
@@ -74,7 +78,7 @@ type StateV2 = {
   deepLinkPayload: unknown;
   staticView: StaticView;
   selectedAppPluginListRevision: number;
-  flipperServer: FlipperServerImpl | undefined;
+  flipperServer: FlipperServer | undefined;
 };
 
 type StateV1 = Omit<StateV2, 'enabledPlugins' | 'enabledDevicePlugins'> & {
@@ -158,7 +162,7 @@ export type Action =
     }
   | {
       type: 'SET_FLIPPER_SERVER';
-      payload: FlipperServerImpl;
+      payload: FlipperServer;
     }
   | RegisterPluginAction;
 
diff --git a/desktop/app/src/reducers/pluginMessageQueue.tsx b/desktop/app/src/reducers/pluginMessageQueue.tsx
index 8ae45bc6f..728fea0ec 100644
--- a/desktop/app/src/reducers/pluginMessageQueue.tsx
+++ b/desktop/app/src/reducers/pluginMessageQueue.tsx
@@ -8,7 +8,7 @@
  */
 
 import produce from 'immer';
-import {deconstructPluginKey} from '../utils/clientUtils';
+import {deconstructPluginKey} from 'flipper-common';
 
 export const DEFAULT_MAX_QUEUE_SIZE = 10000;
 
diff --git a/desktop/app/src/reducers/supportForm.tsx b/desktop/app/src/reducers/supportForm.tsx
index 0cbea179b..193792dfc 100644
--- a/desktop/app/src/reducers/supportForm.tsx
+++ b/desktop/app/src/reducers/supportForm.tsx
@@ -9,7 +9,7 @@
 
 import {Actions, Store} from './';
 import {setStaticView} from './connections';
-import {deconstructClientId} from '../utils/clientUtils';
+import {deconstructClientId} from 'flipper-common';
 import {switchPlugin} from './pluginManager';
 import {showStatusUpdatesForDuration} from '../utils/promiseTimeout';
 import {selectedPlugins as setSelectedPlugins} from './plugins';
diff --git a/desktop/app/src/sandy-chrome/appinspect/LaunchEmulator.tsx b/desktop/app/src/sandy-chrome/appinspect/LaunchEmulator.tsx
index bc17c5e2e..d7522a1a4 100644
--- a/desktop/app/src/sandy-chrome/appinspect/LaunchEmulator.tsx
+++ b/desktop/app/src/sandy-chrome/appinspect/LaunchEmulator.tsx
@@ -17,13 +17,9 @@ import {
 } from '@ant-design/icons';
 import {Store} from '../../reducers';
 import {useStore} from '../../utils/useStore';
-import {launchEmulator} from '../../server/devices/android/AndroidDevice';
 import {Layout, renderReactRoot, withTrackingScope} from 'flipper-plugin';
 import {Provider} from 'react-redux';
-import {
-  launchSimulator, // TODO: move to iOSDeviceManager
-  IOSDeviceParams,
-} from '../../server/devices/ios/iOSDeviceManager';
+import {IOSDeviceParams} from 'flipper-common';
 
 const COLD_BOOT = 'cold-boot';
 
@@ -36,26 +32,12 @@ export function showEmulatorLauncher(store: Store) {
 }
 
 function LaunchEmulatorContainer({onClose}: {onClose: () => void}) {
-  const flipperServer = useStore((state) => state.connections.flipperServer);
-  return (
-    <LaunchEmulatorDialog
-      onClose={onClose}
-      getSimulators={() => flipperServer!.ios.getSimulators(false)}
-      getEmulators={() => flipperServer!.android.getAndroidEmulators()}
-    />
-  );
+  return <LaunchEmulatorDialog onClose={onClose} />;
 }
 
 export const LaunchEmulatorDialog = withTrackingScope(
-  function LaunchEmulatorDialog({
-    onClose,
-    getSimulators,
-    getEmulators,
-  }: {
-    onClose: () => void;
-    getSimulators: () => Promise<IOSDeviceParams[]>;
-    getEmulators: () => Promise<string[]>;
-  }) {
+  function LaunchEmulatorDialog({onClose}: {onClose: () => void}) {
+    const flipperServer = useStore((state) => state.connections.flipperServer);
     const iosEnabled = useStore((state) => state.settingsState.enableIOS);
     const androidEnabled = useStore(
       (state) => state.settingsState.enableAndroid,
@@ -63,12 +45,12 @@ export const LaunchEmulatorDialog = withTrackingScope(
     const [iosEmulators, setIosEmulators] = useState<IOSDeviceParams[]>([]);
     const [androidEmulators, setAndroidEmulators] = useState<string[]>([]);
 
-    const store = useStore();
     useEffect(() => {
       if (!iosEnabled) {
         return;
       }
-      getSimulators()
+      flipperServer!
+        .exec('ios-get-simulators', false)
         .then((emulators) => {
           setIosEmulators(
             emulators.filter(
@@ -81,20 +63,21 @@ export const LaunchEmulatorDialog = withTrackingScope(
         .catch((e) => {
           console.warn('Failed to find simulators', e);
         });
-    }, [iosEnabled, getSimulators, store]);
+    }, [iosEnabled, flipperServer]);
 
     useEffect(() => {
       if (!androidEnabled) {
         return;
       }
-      getEmulators()
+      flipperServer!
+        .exec('android-get-emulators')
         .then((emulators) => {
           setAndroidEmulators(emulators);
         })
         .catch((e) => {
           console.warn('Failed to find emulators', e);
         });
-    }, [androidEnabled, getEmulators]);
+    }, [androidEnabled, flipperServer]);
 
     const items = [
       ...(androidEmulators.length > 0
@@ -102,7 +85,8 @@ export const LaunchEmulatorDialog = withTrackingScope(
         : []),
       ...androidEmulators.map((name) => {
         const launch = (coldBoot: boolean) => {
-          launchEmulator(name, coldBoot)
+          flipperServer!
+            .exec('android-launch-emulator', name, coldBoot)
             .then(onClose)
             .catch((e) => {
               console.error('Failed to start emulator: ', e);
@@ -139,7 +123,8 @@ export const LaunchEmulatorDialog = withTrackingScope(
         <Button
           key={device.udid}
           onClick={() =>
-            launchSimulator(device.udid)
+            flipperServer!
+              .exec('ios-launch-simulator', device.udid)
               .catch((e) => {
                 console.error('Failed to start simulator: ', e);
                 message.error('Failed to start simulator: ' + e);
diff --git a/desktop/app/src/sandy-chrome/appinspect/__tests__/LaunchEmulator.spec.tsx b/desktop/app/src/sandy-chrome/appinspect/__tests__/LaunchEmulator.spec.tsx
index 3141bdc81..9e50bfaf8 100644
--- a/desktop/app/src/sandy-chrome/appinspect/__tests__/LaunchEmulator.spec.tsx
+++ b/desktop/app/src/sandy-chrome/appinspect/__tests__/LaunchEmulator.spec.tsx
@@ -15,23 +15,23 @@ import {LaunchEmulatorDialog} from '../LaunchEmulator';
 
 import {createRootReducer} from '../../../reducers';
 import {sleep} from 'flipper-plugin';
-
-import {launchEmulator} from '../../../server/devices/android/AndroidDevice';
-jest.mock('../../../server/devices/android/AndroidDevice', () => ({
-  launchEmulator: jest.fn(() => Promise.resolve([])),
-}));
+import {createFlipperServerMock} from '../../../test-utils/createFlipperServerMock';
 
 test('Can render and launch android apps - empty', async () => {
   const store = createStore(createRootReducer());
+  const mockServer = createFlipperServerMock({
+    'ios-get-simulators': () => Promise.resolve([]),
+    'android-get-emulators': () => Promise.resolve([]),
+  });
+  store.dispatch({
+    type: 'SET_FLIPPER_SERVER',
+    payload: mockServer,
+  });
   const onClose = jest.fn();
 
   const renderer = render(
     <Provider store={store}>
-      <LaunchEmulatorDialog
-        onClose={onClose}
-        getSimulators={() => Promise.resolve([])}
-        getEmulators={() => Promise.resolve([])}
-      />
+      <LaunchEmulatorDialog onClose={onClose} />
     </Provider>,
   );
 
@@ -45,7 +45,21 @@ test('Can render and launch android apps - empty', async () => {
 });
 
 test('Can render and launch android apps', async () => {
+  let p: Promise<any> | undefined = undefined;
+
   const store = createStore(createRootReducer());
+  const launch = jest.fn().mockImplementation(() => Promise.resolve());
+  const mockServer = createFlipperServerMock({
+    'ios-get-simulators': () => Promise.resolve([]),
+    'android-get-emulators': () =>
+      (p = Promise.resolve(['emulator1', 'emulator2'])),
+    'android-launch-emulator': launch,
+  });
+  store.dispatch({
+    type: 'SET_FLIPPER_SERVER',
+    payload: mockServer,
+  });
+
   store.dispatch({
     type: 'UPDATE_SETTINGS',
     payload: {
@@ -55,15 +69,9 @@ test('Can render and launch android apps', async () => {
   });
   const onClose = jest.fn();
 
-  let p: Promise<any> | undefined = undefined;
-
   const renderer = render(
     <Provider store={store}>
-      <LaunchEmulatorDialog
-        onClose={onClose}
-        getSimulators={() => Promise.resolve([])}
-        getEmulators={() => (p = Promise.resolve(['emulator1', 'emulator2']))}
-      />
+      <LaunchEmulatorDialog onClose={onClose} />
     </Provider>,
   );
 
@@ -84,5 +92,5 @@ test('Can render and launch android apps', async () => {
   fireEvent.click(renderer.getByText('emulator2'));
   await sleep(1000);
   expect(onClose).toBeCalled();
-  expect(launchEmulator).toBeCalledWith('emulator2', false);
+  expect(launch).toBeCalledWith('emulator2', false);
 });
diff --git a/desktop/app/src/server/FlipperServerHost.tsx b/desktop/app/src/server/FlipperServerHost.tsx
deleted file mode 100644
index 047225058..000000000
--- a/desktop/app/src/server/FlipperServerHost.tsx
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-/**
- * A set of utilities that should be provided by the hosting environment
- */
-export interface FlipperServerHost {}
-
-let instance: FlipperServerHost | undefined;
-
-export function getFlipperServerHost(): FlipperServerHost {
-  if (!instance) {
-    throw new Error(
-      'FlipperServerHost not set, call setFlipperServerHost first',
-    );
-  }
-  return instance;
-}
-
-export function setFlipperServerHost(impl: FlipperServerHost) {
-  if (instance) {
-    throw new Error('FlipperServerHost was already set');
-  }
-  instance = impl;
-}
diff --git a/desktop/app/src/test-utils/MockFlipper.tsx b/desktop/app/src/test-utils/MockFlipper.tsx
index 6e291c05b..393d0ed94 100644
--- a/desktop/app/src/test-utils/MockFlipper.tsx
+++ b/desktop/app/src/test-utils/MockFlipper.tsx
@@ -11,13 +11,8 @@ import {createStore} from 'redux';
 import BaseDevice from '../devices/BaseDevice';
 import {createRootReducer} from '../reducers';
 import {Store} from '../reducers/index';
-import Client from '../Client';
-import {
-  ClientConnection,
-  ConnectionStatusChange,
-} from '../server/comms/ClientConnection';
-import {buildClientId} from '../utils/clientUtils';
-import {Logger} from 'flipper-common';
+import Client, {ClientConnection} from '../Client';
+import {Logger, buildClientId, FlipperServer} from 'flipper-common';
 import {PluginDefinition} from '../plugin';
 import {registerPlugins} from '../reducers/plugins';
 import {getLogger} from 'flipper-common';
@@ -27,6 +22,7 @@ import {PluginDetails} from 'flipper-plugin-lib';
 import ArchivedDevice from '../devices/ArchivedDevice';
 import {ClientQuery, DeviceOS} from 'flipper-common';
 import {TestDevice} from './TestDevice';
+import {createFlipperServerMock} from './createFlipperServerMock';
 
 export interface AppOptions {
   plugins?: PluginDefinition[];
@@ -56,6 +52,7 @@ export default class MockFlipper {
   private _clients: Client[] = [];
   private _deviceCounter: number = 0;
   private _clientCounter: number = 0;
+  private _flipperServer: FlipperServer = createFlipperServerMock();
 
   public get store(): Store {
     return this._store;
@@ -89,6 +86,10 @@ export default class MockFlipper {
     });
     initializeFlipperLibImplementation(this._store, this._logger);
     this._store.dispatch(registerPlugins(plugins ?? []));
+    this._store.dispatch({
+      type: 'SET_FLIPPER_SERVER',
+      payload: this._flipperServer,
+    });
   }
 
   public async initWithDeviceAndClient(
@@ -237,12 +238,9 @@ export default class MockFlipper {
     return client;
   }
 }
-function createStubConnection(): ClientConnection | null | undefined {
+
+function createStubConnection(): ClientConnection {
   return {
-    subscribeToEvents(_: ConnectionStatusChange) {},
-    close() {
-      throw new Error('Should not be called in test');
-    },
     send(_: any) {
       throw new Error('Should not be called in test');
     },
diff --git a/desktop/app/src/test-utils/createFlipperServerMock.tsx b/desktop/app/src/test-utils/createFlipperServerMock.tsx
new file mode 100644
index 000000000..0a9756758
--- /dev/null
+++ b/desktop/app/src/test-utils/createFlipperServerMock.tsx
@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {FlipperServer, FlipperServerCommands} from 'flipper-common';
+
+export function createFlipperServerMock(
+  overrides?: Partial<FlipperServerCommands>,
+): FlipperServer {
+  return {
+    on: jest.fn(),
+    off: jest.fn(),
+    exec: jest
+      .fn()
+      .mockImplementation(
+        (cmd: keyof FlipperServerCommands, ...args: any[]) => {
+          if (overrides?.[cmd]) {
+            return (overrides[cmd] as any)(...args);
+          }
+          return Promise.reject(
+            new Error(`FlipperServerMock exec not implemented: ${cmd}}`),
+          );
+        },
+      ),
+    close: jest.fn(),
+  };
+}
diff --git a/desktop/app/src/utils/clientUtils.tsx b/desktop/app/src/utils/clientUtils.tsx
index 8ad37d379..11c79d4b5 100644
--- a/desktop/app/src/utils/clientUtils.tsx
+++ b/desktop/app/src/utils/clientUtils.tsx
@@ -7,39 +7,10 @@
  * @format
  */
 
+import {deconstructClientId} from 'flipper-common';
 import type Client from '../Client';
 import type BaseDevice from '../devices/BaseDevice';
 
-/* A Client uniuely identifies an app running on some device.
-
-  Always use this utility to construct and parse clientId strings.
- */
-export type ClientIdConstituents = {
-  app: string;
-  os: string;
-  device: string;
-  device_id: string;
-};
-
-/* A plugin key is a string uniquely identifying an instance of a plugin.
-   This can be a device plugin for a particular device, or a client plugin for a particular client (app).
-   In the device plugin case, the "client" is the device it's connected to.
-   In the client plugin case (normal plugins), the "client" is the app it's connected to.
-
-   Always use this utility to construct and parse pluginKey strings.
- */
-type PluginKeyConstituents =
-  | {
-      type: 'device';
-      pluginName: string;
-      client: string;
-    }
-  | ({
-      type: 'client';
-      pluginName: string;
-      client: string;
-    } & ClientIdConstituents);
-
 export function currentActiveApps(
   clients: Array<Client>,
   selectedDevice: null | BaseDevice,
@@ -56,65 +27,3 @@ export function currentActiveApps(
     .map((client) => client.appName);
   return currentActiveApps;
 }
-
-export function buildClientId(clientInfo: {
-  app: string;
-  os: string;
-  device: string;
-  device_id: string;
-}): string {
-  // N.B.: device_id can be empty, which designates the host device
-  for (const key of ['app', 'os', 'device'] as Array<
-    keyof ClientIdConstituents
-  >) {
-    if (!clientInfo[key]) {
-      console.error(
-        `Attempted to build clientId with invalid ${key}: "${clientInfo[key]}`,
-      );
-    }
-  }
-  const escapedName = escape(clientInfo.app);
-  return `${escapedName}#${clientInfo.os}#${clientInfo.device}#${clientInfo.device_id}`;
-}
-
-export function deconstructClientId(clientId: string): ClientIdConstituents {
-  if (!clientId || clientId.split('#').length !== 4) {
-    console.error(`Attempted to deconstruct invalid clientId: "${clientId}"`);
-  }
-  let [app, os, device, device_id] = clientId.split('#');
-  app = unescape(app);
-  return {
-    app,
-    os,
-    device,
-    device_id,
-  };
-}
-
-export function deconstructPluginKey(pluginKey: string): PluginKeyConstituents {
-  const parts = pluginKey.split('#');
-  if (parts.length === 2) {
-    // Device plugin
-    return {
-      type: 'device',
-      client: parts[0],
-      pluginName: parts[1],
-    };
-  } else {
-    // Client plugin
-    const lastHashIndex = pluginKey.lastIndexOf('#');
-    const clientId = pluginKey.slice(0, lastHashIndex);
-    const pluginName = pluginKey.slice(lastHashIndex + 1);
-    if (!pluginName) {
-      console.error(
-        `Attempted to deconstruct invalid pluginKey: "${pluginKey}"`,
-      );
-    }
-    return {
-      type: 'client',
-      ...deconstructClientId(clientId),
-      client: clientId,
-      pluginName: pluginName,
-    };
-  }
-}
diff --git a/desktop/app/src/utils/exportData.tsx b/desktop/app/src/utils/exportData.tsx
index ca6d81ddf..056f81ca3 100644
--- a/desktop/app/src/utils/exportData.tsx
+++ b/desktop/app/src/utils/exportData.tsx
@@ -34,7 +34,7 @@ import {
   resetSupportFormV2State,
   SupportFormRequestDetailsState,
 } from '../reducers/supportForm';
-import {deconstructClientId} from '../utils/clientUtils';
+import {deconstructClientId} from 'flipper-common';
 import {performance} from 'perf_hooks';
 import {processMessageQueue} from './messageQueue';
 import {getPluginTitle} from './pluginUtils';
diff --git a/desktop/app/src/utils/flipperLibImplementation.tsx b/desktop/app/src/utils/flipperLibImplementation.tsx
index f77edc4b5..926eac01b 100644
--- a/desktop/app/src/utils/flipperLibImplementation.tsx
+++ b/desktop/app/src/utils/flipperLibImplementation.tsx
@@ -16,7 +16,7 @@ import type BaseDevice from '../devices/BaseDevice';
 import {clipboard, shell} from 'electron';
 import constants from '../fb-stubs/constants';
 import {addNotification} from '../reducers/notifications';
-import {deconstructPluginKey} from './clientUtils';
+import {deconstructPluginKey} from 'flipper-common';
 import {DetailSidebarImpl} from '../sandy-chrome/DetailSidebarImpl';
 
 export function initializeFlipperLibImplementation(
diff --git a/desktop/app/src/utils/info.tsx b/desktop/app/src/utils/info.tsx
index dacde4cd1..fbbb3e87e 100644
--- a/desktop/app/src/utils/info.tsx
+++ b/desktop/app/src/utils/info.tsx
@@ -12,9 +12,8 @@ import isProduction from './isProduction';
 import fs from 'fs-extra';
 import {getStaticPath} from './pathUtils';
 import type {State, Store} from '../reducers/index';
-import {deconstructClientId} from './clientUtils';
 import {sideEffect} from './sideEffect';
-import {Logger, isTest} from 'flipper-common';
+import {Logger, isTest, deconstructClientId} from 'flipper-common';
 
 type PlatformInfo = {
   arch: string;
diff --git a/desktop/app/src/utils/messageQueue.tsx b/desktop/app/src/utils/messageQueue.tsx
index c14569bd6..5894b2288 100644
--- a/desktop/app/src/utils/messageQueue.tsx
+++ b/desktop/app/src/utils/messageQueue.tsx
@@ -17,7 +17,7 @@ import {
 } from '../reducers/pluginMessageQueue';
 import {IdlerImpl} from './Idler';
 import {isPluginEnabled, getSelectedPluginKey} from '../reducers/connections';
-import {deconstructPluginKey} from './clientUtils';
+import {deconstructPluginKey} from 'flipper-common';
 import {defaultEnabledBackgroundPlugins} from './pluginUtils';
 import {batch, Idler, _SandyPluginInstance} from 'flipper-plugin';
 import {addBackgroundStat} from './pluginStats';
diff --git a/desktop/flipper-common/src/GK.tsx b/desktop/flipper-common/src/GK.tsx
new file mode 100644
index 000000000..053864a86
--- /dev/null
+++ b/desktop/flipper-common/src/GK.tsx
@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+export const GK = {
+  get(_name: string): boolean {
+    return false;
+  },
+};
diff --git a/desktop/app/src/utils/__tests__/clientUtils.node.tsx b/desktop/flipper-common/src/__tests__/clientUtils.node.tsx
similarity index 100%
rename from desktop/app/src/utils/__tests__/clientUtils.node.tsx
rename to desktop/flipper-common/src/__tests__/clientUtils.node.tsx
diff --git a/desktop/flipper-common/src/clientUtils.tsx b/desktop/flipper-common/src/clientUtils.tsx
new file mode 100644
index 000000000..449c7c409
--- /dev/null
+++ b/desktop/flipper-common/src/clientUtils.tsx
@@ -0,0 +1,100 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+/* A Client uniuely identifies an app running on some device.
+
+  Always use this utility to construct and parse clientId strings.
+ */
+export type ClientIdConstituents = {
+  app: string;
+  os: string;
+  device: string;
+  device_id: string;
+};
+
+/* A plugin key is a string uniquely identifying an instance of a plugin.
+   This can be a device plugin for a particular device, or a client plugin for a particular client (app).
+   In the device plugin case, the "client" is the device it's connected to.
+   In the client plugin case (normal plugins), the "client" is the app it's connected to.
+
+   Always use this utility to construct and parse pluginKey strings.
+ */
+type PluginKeyConstituents =
+  | {
+      type: 'device';
+      pluginName: string;
+      client: string;
+    }
+  | ({
+      type: 'client';
+      pluginName: string;
+      client: string;
+    } & ClientIdConstituents);
+
+export function buildClientId(clientInfo: {
+  app: string;
+  os: string;
+  device: string;
+  device_id: string;
+}): string {
+  // N.B.: device_id can be empty, which designates the host device
+  for (const key of ['app', 'os', 'device'] as Array<
+    keyof ClientIdConstituents
+  >) {
+    if (!clientInfo[key]) {
+      console.error(
+        `Attempted to build clientId with invalid ${key}: "${clientInfo[key]}`,
+      );
+    }
+  }
+  const escapedName = escape(clientInfo.app);
+  return `${escapedName}#${clientInfo.os}#${clientInfo.device}#${clientInfo.device_id}`;
+}
+
+export function deconstructClientId(clientId: string): ClientIdConstituents {
+  if (!clientId || clientId.split('#').length !== 4) {
+    console.error(`Attempted to deconstruct invalid clientId: "${clientId}"`);
+  }
+  let [app, os, device, device_id] = clientId.split('#');
+  app = unescape(app);
+  return {
+    app,
+    os,
+    device,
+    device_id,
+  };
+}
+
+export function deconstructPluginKey(pluginKey: string): PluginKeyConstituents {
+  const parts = pluginKey.split('#');
+  if (parts.length === 2) {
+    // Device plugin
+    return {
+      type: 'device',
+      client: parts[0],
+      pluginName: parts[1],
+    };
+  } else {
+    // Client plugin
+    const lastHashIndex = pluginKey.lastIndexOf('#');
+    const clientId = pluginKey.slice(0, lastHashIndex);
+    const pluginName = pluginKey.slice(lastHashIndex + 1);
+    if (!pluginName) {
+      console.error(
+        `Attempted to deconstruct invalid pluginKey: "${pluginKey}"`,
+      );
+    }
+    return {
+      type: 'client',
+      ...deconstructClientId(clientId),
+      client: clientId,
+      pluginName: pluginName,
+    };
+  }
+}
diff --git a/desktop/flipper-common/src/index.tsx b/desktop/flipper-common/src/index.tsx
index e0631b9c2..3df88f1ca 100644
--- a/desktop/flipper-common/src/index.tsx
+++ b/desktop/flipper-common/src/index.tsx
@@ -41,3 +41,5 @@ export {
   getErrorFromErrorLike,
 } from './utils/errors';
 export * from './user-session';
+export * from './GK';
+export * from './clientUtils';
diff --git a/desktop/flipper-common/src/server-types.tsx b/desktop/flipper-common/src/server-types.tsx
index 9249a1fc9..d4be2a6c9 100644
--- a/desktop/flipper-common/src/server-types.tsx
+++ b/desktop/flipper-common/src/server-types.tsx
@@ -112,6 +112,14 @@ export type FlipperServerEvents = {
   };
 };
 
+export type IOSDeviceParams = {
+  udid: string;
+  type: DeviceType;
+  name: string;
+  deviceTypeIdentifier?: string;
+  state?: string;
+};
+
 export type FlipperServerCommands = {
   'device-start-logging': (serial: string) => Promise<void>;
   'device-stop-logging': (serial: string) => Promise<void>;
@@ -137,6 +145,10 @@ export type FlipperServerCommands = {
     clientId: string,
     payload: any,
   ) => Promise<ClientResponseType>;
+  'android-get-emulators': () => Promise<string[]>;
+  'android-launch-emulator': (name: string, coldboot: boolean) => Promise<void>;
+  'ios-get-simulators': (bootedOnly: boolean) => Promise<IOSDeviceParams[]>;
+  'ios-launch-simulator': (udid: string) => Promise<void>;
 };
 
 export interface FlipperServer {
@@ -154,3 +166,95 @@ export interface FlipperServer {
   ): ReturnType<FlipperServerCommands[Event]>;
   close(): void;
 }
+
+// From xplat/js/metro/packages/metro/src/lib/reporting.js
+export type MetroBundleDetails = {
+  entryFile: string;
+  platform?: string;
+  dev: boolean;
+  minify: boolean;
+  bundleType: string;
+};
+
+// From xplat/js/metro/packages/metro/src/lib/reporting.js
+export type MetroGlobalCacheDisabledReason =
+  | 'too_many_errors'
+  | 'too_many_misses';
+
+/**
+ * A tagged union of all the actions that may happen and we may want to
+ * report to the tool user.
+ *
+ * Based on xplat/js/metro/packages/metro/src/lib/TerminalReporter.js
+ */
+export type MetroReportableEvent =
+  | {
+      port: number;
+      projectRoots: ReadonlyArray<string>;
+      type: 'initialize_started';
+    }
+  | {type: 'initialize_done'}
+  | {
+      type: 'initialize_failed';
+      port: number;
+      error: Error;
+    }
+  | {
+      buildID: string;
+      type: 'bundle_build_done';
+    }
+  | {
+      buildID: string;
+      type: 'bundle_build_failed';
+    }
+  | {
+      buildID: string;
+      bundleDetails: MetroBundleDetails;
+      type: 'bundle_build_started';
+    }
+  | {
+      error: Error;
+      type: 'bundling_error';
+    }
+  | {type: 'dep_graph_loading'}
+  | {type: 'dep_graph_loaded'}
+  | {
+      buildID: string;
+      type: 'bundle_transform_progressed';
+      transformedFileCount: number;
+      totalFileCount: number;
+    }
+  | {
+      type: 'global_cache_error';
+      error: Error;
+    }
+  | {
+      type: 'global_cache_disabled';
+      reason: MetroGlobalCacheDisabledReason;
+    }
+  | {type: 'transform_cache_reset'}
+  | {
+      type: 'worker_stdout_chunk';
+      chunk: string;
+    }
+  | {
+      type: 'worker_stderr_chunk';
+      chunk: string;
+    }
+  | {
+      type: 'hmr_client_error';
+      error: Error;
+    }
+  | {
+      type: 'client_log';
+      level:
+        | 'trace'
+        | 'info'
+        | 'warn'
+        | 'log'
+        | 'group'
+        | 'groupCollapsed'
+        | 'groupEnd'
+        | 'debug';
+      data: Array<any>;
+    };
diff --git a/desktop/flipper-server-core/package.json b/desktop/flipper-server-core/package.json
index 97510d286..db69e86ff 100644
--- a/desktop/flipper-server-core/package.json
+++ b/desktop/flipper-server-core/package.json
@@ -9,7 +9,29 @@
   "types": "lib/index.d.ts",
   "license": "MIT",
   "bugs": "https://github.com/facebook/flipper/issues",
-  "dependencies": {},
+  "dependencies": {
+    "JSONStream": "^1.3.1",
+    "adbkit": "^2.11.1",
+    "adbkit-logcat": "^2.0.1",
+    "archiver": "^5.3.0",
+    "async-mutex": "^0.3.2",
+    "flipper-common": "0.0.0",
+    "fs-extra": "^10.0.0",
+    "invariant": "^2.2.4",
+    "js-base64": "^3.7.2",
+    "lodash.memoize": "^4.1.2",
+    "openssl-wrapper": "^0.3.4",
+    "promisify-child-process": "^4.1.1",
+    "rsocket-core": "^0.0.27",
+    "rsocket-flowable": "^0.0.27",
+    "rsocket-tcp-server": "^0.0.25",
+    "rsocket-types": "^0.0.25",
+    "split2": "^3.2.2",
+    "tmp": "^0.2.1",
+    "uuid": "^8.3.2",
+    "which": "^2.0.2",
+    "ws": "^8.2.3"
+  },
   "devDependencies": {},
   "peerDependencies": {},
   "scripts": {
diff --git a/desktop/flipper-server-core/src/FlipperServerConfig.tsx b/desktop/flipper-server-core/src/FlipperServerConfig.tsx
new file mode 100644
index 000000000..d4d05491f
--- /dev/null
+++ b/desktop/flipper-server-core/src/FlipperServerConfig.tsx
@@ -0,0 +1,93 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {isTest} from 'flipper-common';
+import {parseFlipperPorts} from './utils/environmentVariables';
+
+export interface FlipperServerConfig {
+  enableAndroid: boolean;
+  androidHome: string;
+  enableIOS: boolean;
+  idbPath: string;
+  enablePhysicalIOS: boolean;
+  validWebSocketOrigins: string[];
+  staticPath: string;
+  tmpPath: string;
+}
+
+// defaultConfig should be used for testing only, and disables by default all features
+const testConfig: FlipperServerConfig = {
+  androidHome: '',
+  enableAndroid: false,
+  enableIOS: false,
+  enablePhysicalIOS: false,
+  idbPath: '',
+  validWebSocketOrigins: [],
+  staticPath: '/static/',
+  tmpPath: '/temp/',
+};
+
+let currentConfig: FlipperServerConfig | undefined = undefined;
+
+export function getFlipperServerConfig(): FlipperServerConfig {
+  if (!currentConfig) {
+    if (isTest()) return testConfig;
+    throw new Error('FlipperServerConfig has not been set');
+  }
+  return currentConfig;
+}
+
+export function setFlipperServerConfig(config: FlipperServerConfig) {
+  currentConfig = config;
+}
+
+type ServerPorts = {
+  insecure: number;
+  secure: number;
+};
+
+export function getServerPortsConfig(): {
+  serverPorts: ServerPorts;
+  altServerPorts: ServerPorts;
+} {
+  let portOverrides: ServerPorts | undefined;
+  if (process.env.FLIPPER_PORTS) {
+    portOverrides = parseFlipperPorts(process.env.FLIPPER_PORTS);
+    if (!portOverrides) {
+      console.error(
+        `Ignoring malformed FLIPPER_PORTS env variable:
+          "${process.env.FLIPPER_PORTS || ''}".
+          Example expected format: "1111,2222".`,
+      );
+    }
+  }
+
+  let portAltOverrides: ServerPorts | undefined;
+  if (process.env.FLIPPER_ALT_PORTS) {
+    portAltOverrides = parseFlipperPorts(process.env.FLIPPER_ALT_PORTS);
+    if (!portAltOverrides) {
+      console.error(
+        `Ignoring malformed FLIPPER_ALT_PORTS env variable:
+          "${process.env.FLIPPER_ALT_PORTS || ''}".
+          Example expected format: "1111,2222".`,
+      );
+    }
+  }
+
+  return {
+    serverPorts: portOverrides ?? {
+      insecure: 8089,
+      secure: 8088,
+    },
+    altServerPorts: portAltOverrides ?? {
+      insecure: 9089,
+      secure: 9088,
+    },
+  };
+}
diff --git a/desktop/app/src/server/FlipperServerImpl.tsx b/desktop/flipper-server-core/src/FlipperServerImpl.tsx
similarity index 91%
rename from desktop/app/src/server/FlipperServerImpl.tsx
rename to desktop/flipper-server-core/src/FlipperServerImpl.tsx
index 4ad8ca24f..1d7833433 100644
--- a/desktop/app/src/server/FlipperServerImpl.tsx
+++ b/desktop/flipper-server-core/src/FlipperServerImpl.tsx
@@ -11,9 +11,11 @@ import EventEmitter from 'events';
 import {Logger} from 'flipper-common';
 import ServerController from './comms/ServerController';
 import {CertificateExchangeMedium} from './utils/CertificateProvider';
-import {ServerPorts} from '../reducers/application';
 import {AndroidDeviceManager} from './devices/android/androidDeviceManager';
-import {IOSDeviceManager} from './devices/ios/iOSDeviceManager';
+import {
+  IOSDeviceManager,
+  launchSimulator,
+} from './devices/ios/iOSDeviceManager';
 import metroDevice from './devices/metro/metroDeviceManager';
 import desktopDevice from './devices/desktop/desktopDeviceManager';
 import {
@@ -26,33 +28,8 @@ import {
 import {ServerDevice} from './devices/ServerDevice';
 import {Base64} from 'js-base64';
 import MetroDevice from './devices/metro/MetroDevice';
-
-export interface FlipperServerConfig {
-  enableAndroid: boolean;
-  androidHome: string;
-  enableIOS: boolean;
-  idbPath: string;
-  enablePhysicalIOS: boolean;
-  serverPorts: ServerPorts;
-  altServerPorts: ServerPorts;
-}
-
-// defaultConfig should be used for testing only, and disables by default all features
-const defaultConfig: FlipperServerConfig = {
-  androidHome: '',
-  enableAndroid: false,
-  enableIOS: false,
-  enablePhysicalIOS: false,
-  idbPath: '',
-  serverPorts: {
-    insecure: -1,
-    secure: -1,
-  },
-  altServerPorts: {
-    insecure: -1,
-    secure: -1,
-  },
-};
+import {launchEmulator} from './devices/android/AndroidDevice';
+import {getFlipperServerConfig} from './FlipperServerConfig';
 
 /**
  * FlipperServer takes care of all incoming device & client connections.
@@ -63,8 +40,6 @@ const defaultConfig: FlipperServerConfig = {
  * using '.on'. All events are strongly typed.
  */
 export class FlipperServerImpl implements FlipperServer {
-  public config: FlipperServerConfig;
-
   private readonly events = new EventEmitter();
   // server handles the incoming RSocket / WebSocket connections from Flipper clients
   readonly server: ServerController;
@@ -74,8 +49,8 @@ export class FlipperServerImpl implements FlipperServer {
   android: AndroidDeviceManager;
   ios: IOSDeviceManager;
 
-  constructor(config: Partial<FlipperServerConfig>, public logger: Logger) {
-    this.config = {...defaultConfig, ...config};
+  constructor(public logger: Logger) {
+    getFlipperServerConfig(); // Config should be available at this point!
     const server = (this.server = new ServerController(this));
     this.android = new AndroidDeviceManager(this);
     this.ios = new IOSDeviceManager(this);
@@ -239,6 +214,12 @@ export class FlipperServerImpl implements FlipperServer {
         },
       };
     },
+    'android-get-emulators': async () => this.android.getAndroidEmulators(),
+    'android-launch-emulator': async (name, coldBoot) =>
+      launchEmulator(name, coldBoot),
+    'ios-get-simulators': async (bootedOnly) =>
+      this.ios.getSimulators(bootedOnly),
+    'ios-launch-simulator': async (udid) => launchSimulator(udid),
   };
 
   registerDevice(device: ServerDevice) {
diff --git a/desktop/app/src/server/comms/BrowserClientFlipperConnection.tsx b/desktop/flipper-server-core/src/comms/BrowserClientFlipperConnection.tsx
similarity index 100%
rename from desktop/app/src/server/comms/BrowserClientFlipperConnection.tsx
rename to desktop/flipper-server-core/src/comms/BrowserClientFlipperConnection.tsx
diff --git a/desktop/app/src/server/comms/ClientConnection.tsx b/desktop/flipper-server-core/src/comms/ClientConnection.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ClientConnection.tsx
rename to desktop/flipper-server-core/src/comms/ClientConnection.tsx
diff --git a/desktop/app/src/server/comms/ServerAdapter.tsx b/desktop/flipper-server-core/src/comms/ServerAdapter.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ServerAdapter.tsx
rename to desktop/flipper-server-core/src/comms/ServerAdapter.tsx
diff --git a/desktop/app/src/server/comms/ServerController.tsx b/desktop/flipper-server-core/src/comms/ServerController.tsx
similarity index 95%
rename from desktop/app/src/server/comms/ServerController.tsx
rename to desktop/flipper-server-core/src/comms/ServerController.tsx
index 6412a00d8..62327bd79 100644
--- a/desktop/app/src/server/comms/ServerController.tsx
+++ b/desktop/flipper-server-core/src/comms/ServerController.tsx
@@ -9,16 +9,20 @@
 
 import {CertificateExchangeMedium} from '../utils/CertificateProvider';
 import {Logger} from 'flipper-common';
-import {ClientDescription, ClientQuery, isTest} from 'flipper-common';
+import {
+  ClientDescription,
+  ClientQuery,
+  isTest,
+  GK,
+  buildClientId,
+} from 'flipper-common';
 import CertificateProvider from '../utils/CertificateProvider';
 import {ClientConnection, ConnectionStatus} from './ClientConnection';
 import {UninitializedClient} from 'flipper-common';
 import {reportPlatformFailures} from 'flipper-common';
 import {EventEmitter} from 'events';
 import invariant from 'invariant';
-import GK from '../../fb-stubs/GK';
-import {buildClientId} from '../../utils/clientUtils';
-import DummyDevice from '../../server/devices/DummyDevice';
+import DummyDevice from '../devices/DummyDevice';
 import {
   appNameWithUpdateHint,
   transformCertificateExchangeMediumToType,
@@ -33,6 +37,10 @@ import {
   TransportType,
 } from './ServerFactory';
 import {FlipperServerImpl} from '../FlipperServerImpl';
+import {
+  getServerPortsConfig,
+  getFlipperServerConfig,
+} from '../FlipperServerConfig';
 
 type ClientInfo = {
   connection: ClientConnection | null | undefined;
@@ -80,7 +88,7 @@ class ServerController extends EventEmitter implements ServerEventsListener {
     this.certificateProvider = new CertificateProvider(
       this,
       this.logger,
-      this.flipperServer.config,
+      getFlipperServerConfig(),
     );
     this.connectionTracker = new ConnectionTracker(this.logger);
     this.secureServer = null;
@@ -111,7 +119,7 @@ class ServerController extends EventEmitter implements ServerEventsListener {
     if (isTest()) {
       throw new Error('Spawing new server is not supported in test');
     }
-    const {insecure, secure} = this.flipperServer.config.serverPorts;
+    const {insecure, secure} = getServerPortsConfig().serverPorts;
 
     this.initialized = this.certificateProvider
       .loadSecureServerConfig()
@@ -119,7 +127,7 @@ class ServerController extends EventEmitter implements ServerEventsListener {
         console.info('[conn] secure server listening at port: ', secure);
         this.secureServer = createServer(secure, this, options);
         if (GK.get('flipper_websocket_server')) {
-          const {secure: altSecure} = this.flipperServer.config.altServerPorts;
+          const {secure: altSecure} = getServerPortsConfig().altServerPorts;
           console.info(
             '[conn] secure server (ws) listening at port: ',
             altSecure,
@@ -136,8 +144,7 @@ class ServerController extends EventEmitter implements ServerEventsListener {
         console.info('[conn] insecure server listening at port: ', insecure);
         this.insecureServer = createServer(insecure, this);
         if (GK.get('flipper_websocket_server')) {
-          const {insecure: altInsecure} =
-            this.flipperServer.config.altServerPorts;
+          const {insecure: altInsecure} = getServerPortsConfig().altServerPorts;
           console.info(
             '[conn] insecure server (ws) listening at port: ',
             altInsecure,
@@ -214,13 +221,13 @@ class ServerController extends EventEmitter implements ServerEventsListener {
 
     const {os, app, device_id} = clientQuery;
     // without these checks, the user might see a connection timeout error instead, which would be much harder to track down
-    if (os === 'iOS' && !this.flipperServer.config.enableIOS) {
+    if (os === 'iOS' && !getFlipperServerConfig().enableIOS) {
       console.error(
         `Refusing connection from ${app} on ${device_id}, since iOS support is disabled in settings`,
       );
       return;
     }
-    if (os === 'Android' && !this.flipperServer.config.enableAndroid) {
+    if (os === 'Android' && !getFlipperServerConfig().enableAndroid) {
       console.error(
         `Refusing connection from ${app} on ${device_id}, since Android support is disabled in settings`,
       );
diff --git a/desktop/app/src/server/comms/ServerFactory.tsx b/desktop/flipper-server-core/src/comms/ServerFactory.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ServerFactory.tsx
rename to desktop/flipper-server-core/src/comms/ServerFactory.tsx
diff --git a/desktop/app/src/server/comms/ServerRSocket.tsx b/desktop/flipper-server-core/src/comms/ServerRSocket.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ServerRSocket.tsx
rename to desktop/flipper-server-core/src/comms/ServerRSocket.tsx
diff --git a/desktop/app/src/server/comms/ServerWebSocket.tsx b/desktop/flipper-server-core/src/comms/ServerWebSocket.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ServerWebSocket.tsx
rename to desktop/flipper-server-core/src/comms/ServerWebSocket.tsx
diff --git a/desktop/app/src/server/comms/ServerWebSocketBase.tsx b/desktop/flipper-server-core/src/comms/ServerWebSocketBase.tsx
similarity index 100%
rename from desktop/app/src/server/comms/ServerWebSocketBase.tsx
rename to desktop/flipper-server-core/src/comms/ServerWebSocketBase.tsx
diff --git a/desktop/app/src/server/comms/ServerWebSocketBrowser.tsx b/desktop/flipper-server-core/src/comms/ServerWebSocketBrowser.tsx
similarity index 97%
rename from desktop/app/src/server/comms/ServerWebSocketBrowser.tsx
rename to desktop/flipper-server-core/src/comms/ServerWebSocketBrowser.tsx
index 546884c14..009fc7393 100644
--- a/desktop/app/src/server/comms/ServerWebSocketBrowser.tsx
+++ b/desktop/flipper-server-core/src/comms/ServerWebSocketBrowser.tsx
@@ -12,10 +12,10 @@ import WebSocket from 'ws';
 import querystring from 'querystring';
 import {BrowserClientFlipperConnection} from './BrowserClientFlipperConnection';
 import {ServerEventsListener} from './ServerAdapter';
-import constants from '../../fb-stubs/constants';
 import ws from 'ws';
 import {IncomingMessage} from 'http';
 import {ClientDescription, ClientQuery} from 'flipper-common';
+import {getFlipperServerConfig} from '../FlipperServerConfig';
 
 /**
  * WebSocket-based server which uses a connect/disconnect handshake over an insecure channel.
@@ -27,7 +27,7 @@ class ServerWebSocketBrowser extends ServerWebSocketBase {
 
   verifyClient(): ws.VerifyClientCallbackSync {
     return (info: {origin: string; req: IncomingMessage; secure: boolean}) => {
-      const ok = constants.VALID_WEB_SOCKET_REQUEST_ORIGIN_PREFIXES.some(
+      const ok = getFlipperServerConfig().validWebSocketOrigins.some(
         (validPrefix) => info.origin.startsWith(validPrefix),
       );
       if (!ok) {
diff --git a/desktop/app/src/server/comms/Utilities.tsx b/desktop/flipper-server-core/src/comms/Utilities.tsx
similarity index 100%
rename from desktop/app/src/server/comms/Utilities.tsx
rename to desktop/flipper-server-core/src/comms/Utilities.tsx
diff --git a/desktop/app/src/server/devices/DummyDevice.tsx b/desktop/flipper-server-core/src/devices/DummyDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/DummyDevice.tsx
rename to desktop/flipper-server-core/src/devices/DummyDevice.tsx
diff --git a/desktop/app/src/server/devices/ServerDevice.tsx b/desktop/flipper-server-core/src/devices/ServerDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/ServerDevice.tsx
rename to desktop/flipper-server-core/src/devices/ServerDevice.tsx
diff --git a/desktop/app/src/server/devices/android/AndroidDevice.tsx b/desktop/flipper-server-core/src/devices/android/AndroidDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/AndroidDevice.tsx
rename to desktop/flipper-server-core/src/devices/android/AndroidDevice.tsx
diff --git a/desktop/app/src/server/devices/android/KaiOSDevice.tsx b/desktop/flipper-server-core/src/devices/android/KaiOSDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/KaiOSDevice.tsx
rename to desktop/flipper-server-core/src/devices/android/KaiOSDevice.tsx
diff --git a/desktop/app/src/server/devices/android/__tests__/adbConfig.node.tsx b/desktop/flipper-server-core/src/devices/android/__tests__/adbConfig.node.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/__tests__/adbConfig.node.tsx
rename to desktop/flipper-server-core/src/devices/android/__tests__/adbConfig.node.tsx
diff --git a/desktop/app/src/server/devices/android/adbClient.tsx b/desktop/flipper-server-core/src/devices/android/adbClient.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/adbClient.tsx
rename to desktop/flipper-server-core/src/devices/android/adbClient.tsx
diff --git a/desktop/app/src/server/devices/android/adbConfig.tsx b/desktop/flipper-server-core/src/devices/android/adbConfig.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/adbConfig.tsx
rename to desktop/flipper-server-core/src/devices/android/adbConfig.tsx
diff --git a/desktop/app/src/server/devices/android/androidContainerUtility.tsx b/desktop/flipper-server-core/src/devices/android/androidContainerUtility.tsx
similarity index 100%
rename from desktop/app/src/server/devices/android/androidContainerUtility.tsx
rename to desktop/flipper-server-core/src/devices/android/androidContainerUtility.tsx
diff --git a/desktop/app/src/server/devices/android/androidDeviceManager.tsx b/desktop/flipper-server-core/src/devices/android/androidDeviceManager.tsx
similarity index 96%
rename from desktop/app/src/server/devices/android/androidDeviceManager.tsx
rename to desktop/flipper-server-core/src/devices/android/androidDeviceManager.tsx
index dec13f790..fa4eb39bb 100644
--- a/desktop/app/src/server/devices/android/androidDeviceManager.tsx
+++ b/desktop/flipper-server-core/src/devices/android/androidDeviceManager.tsx
@@ -17,6 +17,10 @@ import {Client as ADBClient, Device} from 'adbkit';
 import {join} from 'path';
 import {FlipperServerImpl} from '../../FlipperServerImpl';
 import {notNull} from '../../utils/typeUtils';
+import {
+  getServerPortsConfig,
+  getFlipperServerConfig,
+} from '../../FlipperServerConfig';
 
 export class AndroidDeviceManager {
   // cache emulator path
@@ -58,12 +62,10 @@ export class AndroidDeviceManager {
             abiList,
             sdkVersion,
           );
-          if (this.flipperServer.config.serverPorts) {
+          const ports = getServerPortsConfig();
+          if (ports.serverPorts) {
             await androidLikeDevice
-              .reverse([
-                this.flipperServer.config.serverPorts.secure,
-                this.flipperServer.config.serverPorts.insecure,
-              ])
+              .reverse([ports.serverPorts.secure, ports.serverPorts.insecure])
               // We may not be able to establish a reverse connection, e.g. for old Android SDKs.
               // This is *generally* fine, because we hard-code the ports on the SDK side.
               .catch((e) => {
@@ -177,7 +179,7 @@ export class AndroidDeviceManager {
 
   async watchAndroidDevices() {
     try {
-      const client = await getAdbClient(this.flipperServer.config);
+      const client = await getAdbClient(getFlipperServerConfig());
       client
         .trackDevices()
         .then((tracker) => {
diff --git a/desktop/app/src/server/devices/desktop/MacDevice.tsx b/desktop/flipper-server-core/src/devices/desktop/MacDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/desktop/MacDevice.tsx
rename to desktop/flipper-server-core/src/devices/desktop/MacDevice.tsx
diff --git a/desktop/app/src/server/devices/desktop/WindowsDevice.tsx b/desktop/flipper-server-core/src/devices/desktop/WindowsDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/desktop/WindowsDevice.tsx
rename to desktop/flipper-server-core/src/devices/desktop/WindowsDevice.tsx
diff --git a/desktop/app/src/server/devices/desktop/desktopDeviceManager.tsx b/desktop/flipper-server-core/src/devices/desktop/desktopDeviceManager.tsx
similarity index 100%
rename from desktop/app/src/server/devices/desktop/desktopDeviceManager.tsx
rename to desktop/flipper-server-core/src/devices/desktop/desktopDeviceManager.tsx
diff --git a/desktop/app/src/server/devices/ios/IOSBridge.tsx b/desktop/flipper-server-core/src/devices/ios/IOSBridge.tsx
similarity index 97%
rename from desktop/app/src/server/devices/ios/IOSBridge.tsx
rename to desktop/flipper-server-core/src/devices/ios/IOSBridge.tsx
index e9b16cb8c..9f918ebff 100644
--- a/desktop/app/src/server/devices/ios/IOSBridge.tsx
+++ b/desktop/flipper-server-core/src/devices/ios/IOSBridge.tsx
@@ -13,7 +13,7 @@ import {DeviceType} from 'flipper-plugin-lib';
 import {v1 as uuid} from 'uuid';
 import path from 'path';
 import {exec} from 'promisify-child-process';
-import {getAppTempPath} from '../../../utils/pathUtils';
+import {getFlipperServerConfig} from '../../FlipperServerConfig';
 
 export const ERR_NO_IDB_OR_XCODE_AVAILABLE =
   'Neither Xcode nor idb available. Cannot provide iOS device functionality.';
@@ -98,8 +98,7 @@ export function xcrunStartLogListener(udid: string, deviceType: DeviceType) {
 
 function makeTempScreenshotFilePath() {
   const imageName = uuid() + '.png';
-  const directory = getAppTempPath();
-  return path.join(directory, imageName);
+  return path.join(getFlipperServerConfig().tmpPath, imageName);
 }
 
 async function runScreenshotCommand(
diff --git a/desktop/app/src/server/devices/ios/IOSDevice.tsx b/desktop/flipper-server-core/src/devices/ios/IOSDevice.tsx
similarity index 100%
rename from desktop/app/src/server/devices/ios/IOSDevice.tsx
rename to desktop/flipper-server-core/src/devices/ios/IOSDevice.tsx
diff --git a/desktop/app/src/server/devices/ios/__tests__/IOSBridge.node.tsx b/desktop/flipper-server-core/src/devices/ios/__tests__/IOSBridge.node.tsx
similarity index 86%
rename from desktop/app/src/server/devices/ios/__tests__/IOSBridge.node.tsx
rename to desktop/flipper-server-core/src/devices/ios/__tests__/IOSBridge.node.tsx
index 25a3e9661..e37234c5f 100644
--- a/desktop/app/src/server/devices/ios/__tests__/IOSBridge.node.tsx
+++ b/desktop/flipper-server-core/src/devices/ios/__tests__/IOSBridge.node.tsx
@@ -10,20 +10,16 @@
 import {makeIOSBridge} from '../IOSBridge';
 import childProcess from 'child_process';
 import * as promisifyChildProcess from 'promisify-child-process';
-import {mocked} from 'ts-jest/utils';
 
 jest.mock('child_process');
-const spawn = mocked(childProcess.spawn);
-
 jest.mock('promisify-child-process');
-const exec = mocked(promisifyChildProcess.exec);
 
 test('uses xcrun with no idb when xcode is detected', async () => {
   const ib = await makeIOSBridge('', true);
 
   ib.startLogListener('deadbeef', 'emulator');
 
-  expect(spawn).toHaveBeenCalledWith(
+  expect(childProcess.spawn).toHaveBeenCalledWith(
     'xcrun',
     [
       'simctl',
@@ -47,7 +43,7 @@ test('uses idb when present and xcode detected', async () => {
 
   ib.startLogListener('deadbeef', 'emulator');
 
-  expect(spawn).toHaveBeenCalledWith(
+  expect(childProcess.spawn).toHaveBeenCalledWith(
     '/usr/local/bin/idb',
     [
       'log',
@@ -70,7 +66,7 @@ test('uses idb when present and xcode detected and physical device connected', a
 
   ib.startLogListener('deadbeef', 'physical');
 
-  expect(spawn).toHaveBeenCalledWith(
+  expect(childProcess.spawn).toHaveBeenCalledWith(
     '/usr/local/bin/idb',
     [
       'log',
@@ -101,7 +97,7 @@ test.unix(
 
     ib.screenshot('deadbeef');
 
-    expect(exec).toHaveBeenCalledWith(
+    expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
       'xcrun simctl io deadbeef screenshot /temp/00000000-0000-0000-0000-000000000000.png',
     );
   },
@@ -112,7 +108,7 @@ test.unix('uses idb to take screenshots when available', async () => {
 
   ib.screenshot('deadbeef');
 
-  expect(exec).toHaveBeenCalledWith(
+  expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
     'idb screenshot --udid deadbeef /temp/00000000-0000-0000-0000-000000000000.png',
   );
 });
@@ -122,7 +118,7 @@ test('uses xcrun to navigate with no idb when xcode is detected', async () => {
 
   ib.navigate('deadbeef', 'fb://dummy');
 
-  expect(exec).toHaveBeenCalledWith(
+  expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
     'xcrun simctl io deadbeef launch url "fb://dummy"',
   );
 });
@@ -132,7 +128,9 @@ test('uses idb to navigate when available', async () => {
 
   ib.navigate('deadbeef', 'fb://dummy');
 
-  expect(exec).toHaveBeenCalledWith('idb open --udid deadbeef "fb://dummy"');
+  expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
+    'idb open --udid deadbeef "fb://dummy"',
+  );
 });
 
 test('uses xcrun to record with no idb when xcode is detected', async () => {
@@ -140,7 +138,7 @@ test('uses xcrun to record with no idb when xcode is detected', async () => {
 
   ib.recordVideo('deadbeef', '/tmp/video.mp4');
 
-  expect(exec).toHaveBeenCalledWith(
+  expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
     'xcrun simctl io deadbeef recordVideo --codec=h264 --force /tmp/video.mp4',
   );
 });
@@ -150,7 +148,7 @@ test('uses idb to record when available', async () => {
 
   ib.recordVideo('deadbeef', '/tmo/video.mp4');
 
-  expect(exec).toHaveBeenCalledWith(
+  expect(promisifyChildProcess.exec).toHaveBeenCalledWith(
     'idb record-video --udid deadbeef /tmo/video.mp4',
   );
 });
diff --git a/desktop/app/src/server/devices/ios/__tests__/iOSContainerUtility.node.tsx b/desktop/flipper-server-core/src/devices/ios/__tests__/iOSContainerUtility.node.tsx
similarity index 100%
rename from desktop/app/src/server/devices/ios/__tests__/iOSContainerUtility.node.tsx
rename to desktop/flipper-server-core/src/devices/ios/__tests__/iOSContainerUtility.node.tsx
diff --git a/desktop/app/src/server/devices/ios/__tests__/iOSDevice.node.tsx b/desktop/flipper-server-core/src/devices/ios/__tests__/iOSDevice.node.tsx
similarity index 88%
rename from desktop/app/src/server/devices/ios/__tests__/iOSDevice.node.tsx
rename to desktop/flipper-server-core/src/devices/ios/__tests__/iOSDevice.node.tsx
index e589e29b7..d252ba8ec 100644
--- a/desktop/app/src/server/devices/ios/__tests__/iOSDevice.node.tsx
+++ b/desktop/flipper-server-core/src/devices/ios/__tests__/iOSDevice.node.tsx
@@ -8,16 +8,10 @@
  */
 
 import {parseXcodeFromCoreSimPath} from '../iOSDeviceManager';
-import configureStore from 'redux-mock-store';
-import {State, createRootReducer} from '../../../../reducers/index';
 import {getLogger} from 'flipper-common';
 import {IOSBridge} from '../IOSBridge';
 import {FlipperServerImpl} from '../../../FlipperServerImpl';
 
-const mockStore = configureStore<State, {}>([])(
-  createRootReducer()(undefined, {type: 'INIT'}),
-);
-
 const standardCoresimulatorLog =
   'username            1264   0.0  0.1  5989740  41648   ??  Ss    2:23PM   0:12.92 /Applications/Xcode_12.4.0_fb.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/mobileassetd';
 
@@ -59,7 +53,7 @@ test('test parseXcodeFromCoreSimPath from standard locations', () => {
 });
 
 test('test getAllPromisesForQueryingDevices when xcode detected', () => {
-  const flipperServer = new FlipperServerImpl({}, getLogger());
+  const flipperServer = new FlipperServerImpl(getLogger());
   flipperServer.ios.iosBridge = {} as IOSBridge;
   const promises = flipperServer.ios.getAllPromisesForQueryingDevices(
     true,
@@ -69,7 +63,7 @@ test('test getAllPromisesForQueryingDevices when xcode detected', () => {
 });
 
 test('test getAllPromisesForQueryingDevices when xcode is not detected', () => {
-  const flipperServer = new FlipperServerImpl({}, getLogger());
+  const flipperServer = new FlipperServerImpl(getLogger());
   flipperServer.ios.iosBridge = {} as IOSBridge;
   const promises = flipperServer.ios.getAllPromisesForQueryingDevices(
     false,
@@ -79,7 +73,7 @@ test('test getAllPromisesForQueryingDevices when xcode is not detected', () => {
 });
 
 test('test getAllPromisesForQueryingDevices when xcode and idb are both unavailable', () => {
-  const flipperServer = new FlipperServerImpl({}, getLogger());
+  const flipperServer = new FlipperServerImpl(getLogger());
   flipperServer.ios.iosBridge = {} as IOSBridge;
   const promises = flipperServer.ios.getAllPromisesForQueryingDevices(
     false,
@@ -89,7 +83,7 @@ test('test getAllPromisesForQueryingDevices when xcode and idb are both unavaila
 });
 
 test('test getAllPromisesForQueryingDevices when both idb and xcode are available', () => {
-  const flipperServer = new FlipperServerImpl({}, getLogger());
+  const flipperServer = new FlipperServerImpl(getLogger());
   flipperServer.ios.iosBridge = {} as IOSBridge;
   const promises = flipperServer.ios.getAllPromisesForQueryingDevices(
     true,
diff --git a/desktop/app/src/server/devices/ios/__tests__/iOSLogs.node.tsx b/desktop/flipper-server-core/src/devices/ios/__tests__/iOSLogs.node.tsx
similarity index 100%
rename from desktop/app/src/server/devices/ios/__tests__/iOSLogs.node.tsx
rename to desktop/flipper-server-core/src/devices/ios/__tests__/iOSLogs.node.tsx
diff --git a/desktop/app/src/server/devices/ios/iOSContainerUtility.tsx b/desktop/flipper-server-core/src/devices/ios/iOSContainerUtility.tsx
similarity index 88%
rename from desktop/app/src/server/devices/ios/iOSContainerUtility.tsx
rename to desktop/flipper-server-core/src/devices/ios/iOSContainerUtility.tsx
index d8e209b0b..313e65638 100644
--- a/desktop/app/src/server/devices/ios/iOSContainerUtility.tsx
+++ b/desktop/flipper-server-core/src/devices/ios/iOSContainerUtility.tsx
@@ -7,7 +7,6 @@
  * @format
  */
 
-import React from 'react';
 import {Mutex} from 'async-mutex';
 import {exec as unsafeExec, Output} from 'promisify-child-process';
 import {reportPlatformFailures} from 'flipper-common';
@@ -18,8 +17,6 @@ import {promisify} from 'util';
 import child_process from 'child_process';
 import fs from 'fs-extra';
 import path from 'path';
-import fbConfig from '../../../fb-stubs/config';
-import {notification, Typography} from 'antd';
 const exec = promisify(child_process.exec);
 
 // Use debug to get helpful logs when idb fails
@@ -251,14 +248,9 @@ function handleMissingIdb(e: Error, idbPath: string): void {
     e.message.includes('sudo: no tty present and no askpass program specified')
   ) {
     console.warn(e);
-    const message = `idb doesn't appear to be installed. Run "${idbPath} list-targets" to fix this.`;
-    notification.error({
-      message: 'Cannot connect to idb',
-      duration: null,
-      description: message,
-      key: 'idb_connection_failed',
-    });
-    return;
+    throw new Error(
+      `idb doesn't appear to be installed. Run "${idbPath} list-targets" to fix this.`,
+    );
   }
   throw e;
 }
@@ -271,24 +263,11 @@ function handleMissingPermissions(e: Error): void {
     e.message.includes('sonar/app.csr')
   ) {
     console.warn(e);
-    const message = fbConfig.isFBBuild ? (
-      <>
-        Idb lacks permissions to exchange certificates. Did you install a source
-        build or a debug build with certificate exchange enabled?{' '}
-        <Typography.Link href="https://www.internalfb.com/intern/staticdocs/flipper/docs/getting-started/fb/connecting-to-flipper#app-on-physical-ios-device">
-          How To
-        </Typography.Link>
-      </>
-    ) : (
-      'Idb lacks permissions to exchange certificates. Did you install a source build?'
+    throw new Error(
+      'Cannot connect to iOS application. idb_certificate_pull_failed' +
+        'Idb lacks permissions to exchange certificates. Did you install a source build ([FB] or enable certificate exchange)? ' +
+        e,
     );
-    notification.error({
-      message: 'Cannot connect to iOS application',
-      duration: null,
-      description: message,
-      key: 'idb_certificate_pull_failed',
-    });
-    return;
   }
   throw e;
 }
diff --git a/desktop/app/src/server/devices/ios/iOSDeviceManager.tsx b/desktop/flipper-server-core/src/devices/ios/iOSDeviceManager.tsx
similarity index 93%
rename from desktop/app/src/server/devices/ios/iOSDeviceManager.tsx
rename to desktop/flipper-server-core/src/devices/ios/iOSDeviceManager.tsx
index 2b0d66a43..a10443445 100644
--- a/desktop/app/src/server/devices/ios/iOSDeviceManager.tsx
+++ b/desktop/flipper-server-core/src/devices/ios/iOSDeviceManager.tsx
@@ -8,13 +8,12 @@
  */
 
 import {ChildProcess} from 'child_process';
-import type {DeviceType} from 'flipper-common';
+import type {IOSDeviceParams} from 'flipper-common';
 import path from 'path';
 import childProcess from 'child_process';
 import {exec, execFile} from 'promisify-child-process';
 import iosUtil from './iOSContainerUtility';
 import IOSDevice from './IOSDevice';
-import {getStaticPath} from '../../../utils/pathUtils';
 import {
   ERR_NO_IDB_OR_XCODE_AVAILABLE,
   IOSBridge,
@@ -22,6 +21,7 @@ import {
 } from './IOSBridge';
 import {FlipperServerImpl} from '../../FlipperServerImpl';
 import {notNull} from '../../utils/typeUtils';
+import {getFlipperServerConfig} from '../../FlipperServerConfig';
 
 type iOSSimulatorDevice = {
   state: 'Booted' | 'Shutdown' | 'Shutting Down';
@@ -31,14 +31,6 @@ type iOSSimulatorDevice = {
   udid: string;
 };
 
-export type IOSDeviceParams = {
-  udid: string;
-  type: DeviceType;
-  name: string;
-  deviceTypeIdentifier?: string;
-  state?: string;
-};
-
 function isAvailable(simulator: iOSSimulatorDevice): boolean {
   // For some users "availability" is set, for others it's "isAvailable"
   // It's not clear which key is set, so we are checking both.
@@ -53,13 +45,12 @@ function isAvailable(simulator: iOSSimulatorDevice): boolean {
 export class IOSDeviceManager {
   private portForwarders: Array<ChildProcess> = [];
 
-  private portforwardingClient = getStaticPath(
-    path.join(
-      'PortForwardingMacApp.app',
-      'Contents',
-      'MacOS',
-      'PortForwardingMacApp',
-    ),
+  private portforwardingClient = path.join(
+    getFlipperServerConfig().staticPath,
+    'PortForwardingMacApp.app',
+    'Contents',
+    'MacOS',
+    'PortForwardingMacApp',
   );
   iosBridge: IOSBridge | undefined;
   private xcodeVersionMismatchFound = false;
@@ -114,7 +105,7 @@ export class IOSDeviceManager {
     isXcodeDetected: boolean,
     isIdbAvailable: boolean,
   ): Array<Promise<any>> {
-    const {config} = this.flipperServer;
+    const config = getFlipperServerConfig();
     return [
       isIdbAvailable
         ? getActiveDevices(config.idbPath, config.enablePhysicalIOS).then(
@@ -133,7 +124,7 @@ export class IOSDeviceManager {
   }
 
   private async queryDevices(): Promise<any> {
-    const {config} = this.flipperServer;
+    const config = getFlipperServerConfig();
     const isXcodeInstalled = await iosUtil.isXcodeDetected();
     const isIdbAvailable = await iosUtil.isAvailable(config.idbPath);
     return Promise.all(
@@ -177,19 +168,19 @@ export class IOSDeviceManager {
 
   public async watchIOSDevices() {
     // TODO: pull this condition up
-    if (!this.flipperServer.config.enableIOS) {
+    if (!getFlipperServerConfig().enableIOS) {
       return;
     }
     try {
       const isDetected = await iosUtil.isXcodeDetected();
       this.xcodeCommandLineToolsDetected = isDetected;
-      if (this.flipperServer.config.enablePhysicalIOS) {
+      if (getFlipperServerConfig().enablePhysicalIOS) {
         this.startDevicePortForwarders();
       }
       try {
         // Awaiting the promise here to trigger immediate error handling.
         this.iosBridge = await makeIOSBridge(
-          this.flipperServer.config.idbPath,
+          getFlipperServerConfig().idbPath,
           isDetected,
         );
         this.queryDevicesForever();
diff --git a/desktop/app/src/server/devices/metro/MetroDevice.tsx b/desktop/flipper-server-core/src/devices/metro/MetroDevice.tsx
similarity index 59%
rename from desktop/app/src/server/devices/metro/MetroDevice.tsx
rename to desktop/flipper-server-core/src/devices/metro/MetroDevice.tsx
index 2108bcb23..c0fb24ae9 100644
--- a/desktop/app/src/server/devices/metro/MetroDevice.tsx
+++ b/desktop/flipper-server-core/src/devices/metro/MetroDevice.tsx
@@ -7,101 +7,11 @@
  * @format
  */
 
-import {DeviceLogLevel} from 'flipper-common';
+import {DeviceLogLevel, MetroReportableEvent} from 'flipper-common';
 import util from 'util';
 import {FlipperServerImpl} from '../../FlipperServerImpl';
 import {ServerDevice} from '../ServerDevice';
 
-// From xplat/js/metro/packages/metro/src/lib/reporting.js
-export type BundleDetails = {
-  entryFile: string;
-  platform?: string;
-  dev: boolean;
-  minify: boolean;
-  bundleType: string;
-};
-
-// From xplat/js/metro/packages/metro/src/lib/reporting.js
-export type GlobalCacheDisabledReason = 'too_many_errors' | 'too_many_misses';
-
-/**
- * A tagged union of all the actions that may happen and we may want to
- * report to the tool user.
- *
- * Based on xplat/js/metro/packages/metro/src/lib/TerminalReporter.js
- */
-export type MetroReportableEvent =
-  | {
-      port: number;
-      projectRoots: ReadonlyArray<string>;
-      type: 'initialize_started';
-    }
-  | {type: 'initialize_done'}
-  | {
-      type: 'initialize_failed';
-      port: number;
-      error: Error;
-    }
-  | {
-      buildID: string;
-      type: 'bundle_build_done';
-    }
-  | {
-      buildID: string;
-      type: 'bundle_build_failed';
-    }
-  | {
-      buildID: string;
-      bundleDetails: BundleDetails;
-      type: 'bundle_build_started';
-    }
-  | {
-      error: Error;
-      type: 'bundling_error';
-    }
-  | {type: 'dep_graph_loading'}
-  | {type: 'dep_graph_loaded'}
-  | {
-      buildID: string;
-      type: 'bundle_transform_progressed';
-      transformedFileCount: number;
-      totalFileCount: number;
-    }
-  | {
-      type: 'global_cache_error';
-      error: Error;
-    }
-  | {
-      type: 'global_cache_disabled';
-      reason: GlobalCacheDisabledReason;
-    }
-  | {type: 'transform_cache_reset'}
-  | {
-      type: 'worker_stdout_chunk';
-      chunk: string;
-    }
-  | {
-      type: 'worker_stderr_chunk';
-      chunk: string;
-    }
-  | {
-      type: 'hmr_client_error';
-      error: Error;
-    }
-  | {
-      type: 'client_log';
-      level:
-        | 'trace'
-        | 'info'
-        | 'warn'
-        | 'log'
-        | 'group'
-        | 'groupCollapsed'
-        | 'groupEnd'
-        | 'debug';
-      data: Array<any>;
-    };
-
 const metroLogLevelMapping: {[key: string]: DeviceLogLevel} = {
   trace: 'verbose',
   info: 'info',
diff --git a/desktop/app/src/server/devices/metro/metroDeviceManager.tsx b/desktop/flipper-server-core/src/devices/metro/metroDeviceManager.tsx
similarity index 100%
rename from desktop/app/src/server/devices/metro/metroDeviceManager.tsx
rename to desktop/flipper-server-core/src/devices/metro/metroDeviceManager.tsx
diff --git a/desktop/flipper-server-core/src/index.tsx b/desktop/flipper-server-core/src/index.tsx
index 90a375a48..332550fd7 100644
--- a/desktop/flipper-server-core/src/index.tsx
+++ b/desktop/flipper-server-core/src/index.tsx
@@ -7,6 +7,10 @@
  * @format
  */
 
-export function helloWorld() {
-  return true;
-}
+export {
+  FlipperServerConfig,
+  getFlipperServerConfig,
+  setFlipperServerConfig,
+} from './FlipperServerConfig';
+
+export {FlipperServerImpl} from './FlipperServerImpl';
diff --git a/desktop/app/src/server/utils/CertificateProvider.tsx b/desktop/flipper-server-core/src/utils/CertificateProvider.tsx
similarity index 100%
rename from desktop/app/src/server/utils/CertificateProvider.tsx
rename to desktop/flipper-server-core/src/utils/CertificateProvider.tsx
diff --git a/desktop/app/src/server/utils/__tests__/environmentVariables.node.tsx b/desktop/flipper-server-core/src/utils/__tests__/environmentVariables.node.tsx
similarity index 100%
rename from desktop/app/src/server/utils/__tests__/environmentVariables.node.tsx
rename to desktop/flipper-server-core/src/utils/__tests__/environmentVariables.node.tsx
diff --git a/desktop/app/src/server/utils/environmentVariables.tsx b/desktop/flipper-server-core/src/utils/environmentVariables.tsx
similarity index 100%
rename from desktop/app/src/server/utils/environmentVariables.tsx
rename to desktop/flipper-server-core/src/utils/environmentVariables.tsx
diff --git a/desktop/app/src/server/utils/openssl-wrapper-with-promises.tsx b/desktop/flipper-server-core/src/utils/openssl-wrapper-with-promises.tsx
similarity index 100%
rename from desktop/app/src/server/utils/openssl-wrapper-with-promises.tsx
rename to desktop/flipper-server-core/src/utils/openssl-wrapper-with-promises.tsx
diff --git a/desktop/app/src/server/utils/typeUtils.tsx b/desktop/flipper-server-core/src/utils/typeUtils.tsx
similarity index 100%
rename from desktop/app/src/server/utils/typeUtils.tsx
rename to desktop/flipper-server-core/src/utils/typeUtils.tsx
diff --git a/desktop/yarn.lock b/desktop/yarn.lock
index 050141f0c..f579f9cbc 100644
--- a/desktop/yarn.lock
+++ b/desktop/yarn.lock
@@ -3865,7 +3865,7 @@ archiver-utils@^2.1.0:
     normalize-path "^3.0.0"
     readable-stream "^2.0.0"
 
-archiver@^5.0.2:
+archiver@^5.0.2, archiver@^5.3.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/archiver/-/archiver-5.3.0.tgz#dd3e097624481741df626267564f7dd8640a45ba"
   integrity sha512-iUw+oDwK0fgNpvveEsdQ0Ase6IIKztBJU2U0E9MzszMfmVVUyv1QJhS2ITW9ZCqx8dktAxVAjWWkKehuZE8OPg==
@@ -5829,9 +5829,9 @@ electron-publish@22.11.1:
     mime "^2.5.0"
 
 electron-to-chromium@^1.3.857:
-  version "1.3.862"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.862.tgz#c1c5d4382449e2c9b0e67fe1652f4fc451d6d8c0"
-  integrity sha512-o+FMbCD+hAUJ9S8bfz/FaqA0gE8OpCCm58KhhGogOEqiA1BLFSoVYLi+tW+S/ZavnqBn++n0XZm7HQiBVPs8Jg==
+  version "1.3.864"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.864.tgz#6a993bcc196a2b8b3df84d28d5d4dd912393885f"
+  integrity sha512-v4rbad8GO6/yVI92WOeU9Wgxc4NA0n4f6P1FvZTY+jyY7JHEhw3bduYu60v3Q1h81Cg6eo4ApZrFPuycwd5hGw==
 
 electron@11.2.3:
   version "11.2.3"
@@ -10692,7 +10692,7 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
-promisify-child-process@^4.1.0:
+promisify-child-process@^4.1.0, promisify-child-process@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/promisify-child-process/-/promisify-child-process-4.1.1.tgz#290659e079f9c7bd46708404d4488a1a6b802686"
   integrity sha512-/sRjHZwoXf1rJ+8s4oWjYjGRVKNK1DUnqfRC1Zek18pl0cN6k3yJ1cCbqd0tWNe4h0Gr+SY4vR42N33+T82WkA==
@@ -13661,7 +13661,7 @@ ws@1.1.5, ws@^1.1.5:
     options ">=0.0.5"
     ultron "1.0.x"
 
-ws@^7.4.5, ws@^7.4.6, ws@^8.2.1, ws@~7.4.2:
+ws@^7.4.5, ws@^7.4.6, ws@^8.2.1, ws@^8.2.3, ws@~7.4.2:
   version "7.5.5"
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.5.5.tgz#8b4bc4af518cfabd0473ae4f99144287b33eb881"
   integrity sha512-BAkMFcAzl8as1G/hArkxOxq3G7pjUqQ3gzYbLL0/5zNkph70e+lCoxBGnm6AW1+/aiNeV4fnKqZ8m4GZewmH2w==