diff --git a/arduino-ide-extension/src/browser/boards/boards-auto-installer.ts b/arduino-ide-extension/src/browser/boards/boards-auto-installer.ts
index 62eaa6f1..2f6ff16f 100644
--- a/arduino-ide-extension/src/browser/boards/boards-auto-installer.ts
+++ b/arduino-ide-extension/src/browser/boards/boards-auto-installer.ts
@@ -4,7 +4,7 @@ import { FrontendApplicationContribution } from '@theia/core/lib/browser/fronten
 import { BoardsService, Board } from '../../common/protocol/boards-service';
 import { BoardsServiceClientImpl } from './boards-service-client-impl';
 import { BoardsListWidgetFrontendContribution } from './boards-widget-frontend-contribution';
-import { InstallationProgressDialog } from '../components/installation-progress-dialog';
+import { InstallationProgressDialog } from '../components/progress-dialog';
 import { BoardsConfig } from './boards-config';
 
 
@@ -60,4 +60,4 @@ export class BoardsAutoInstaller implements FrontendApplicationContribution {
         }
     }
 
-}
\ No newline at end of file
+}
diff --git a/arduino-ide-extension/src/browser/boards/boards-service-client-impl.ts b/arduino-ide-extension/src/browser/boards/boards-service-client-impl.ts
index e2ac6a80..d88d284e 100644
--- a/arduino-ide-extension/src/browser/boards/boards-service-client-impl.ts
+++ b/arduino-ide-extension/src/browser/boards/boards-service-client-impl.ts
@@ -3,7 +3,7 @@ import { Emitter } from '@theia/core/lib/common/event';
 import { ILogger } from '@theia/core/lib/common/logger';
 import { LocalStorageService } from '@theia/core/lib/browser/storage-service';
 import { RecursiveRequired } from '../../common/types';
-import { BoardsServiceClient, AttachedBoardsChangeEvent, BoardInstalledEvent, AttachedSerialBoard, Board, Port } from '../../common/protocol/boards-service';
+import { BoardsServiceClient, AttachedBoardsChangeEvent, BoardInstalledEvent, AttachedSerialBoard, Board, Port, BoardUninstalledEvent } from '../../common/protocol/boards-service';
 import { BoardsConfig } from './boards-config';
 
 @injectable()
@@ -16,6 +16,7 @@ export class BoardsServiceClientImpl implements BoardsServiceClient {
     protected storageService: LocalStorageService;
 
     protected readonly onBoardInstalledEmitter = new Emitter<BoardInstalledEvent>();
+    protected readonly onBoardUninstalledEmitter = new Emitter<BoardUninstalledEvent>();
     protected readonly onAttachedBoardsChangedEmitter = new Emitter<AttachedBoardsChangeEvent>();
     protected readonly onSelectedBoardsConfigChangedEmitter = new Emitter<BoardsConfig.Config>();
 
@@ -31,6 +32,7 @@ export class BoardsServiceClientImpl implements BoardsServiceClient {
 
     readonly onBoardsChanged = this.onAttachedBoardsChangedEmitter.event;
     readonly onBoardInstalled = this.onBoardInstalledEmitter.event;
+    readonly onBoardUninstalled = this.onBoardUninstalledEmitter.event;
     readonly onBoardsConfigChanged = this.onSelectedBoardsConfigChangedEmitter.event;
 
     @postConstruct()
@@ -87,6 +89,11 @@ export class BoardsServiceClientImpl implements BoardsServiceClient {
         this.onBoardInstalledEmitter.fire(event);
     }
 
+    notifyBoardUninstalled(event: BoardUninstalledEvent): void {
+        this.logger.info('Board uninstalled: ', JSON.stringify(event));
+        this.onBoardUninstalledEmitter.fire(event);
+    }
+
     set boardsConfig(config: BoardsConfig.Config) {
         this.logger.info('Board config changed: ', JSON.stringify(config));
         this._boardsConfig = config;
diff --git a/arduino-ide-extension/src/browser/components/component-list/component-list-item.tsx b/arduino-ide-extension/src/browser/components/component-list/component-list-item.tsx
index a9bd967c..8944455c 100644
--- a/arduino-ide-extension/src/browser/components/component-list/component-list-item.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/component-list-item.tsx
@@ -19,13 +19,22 @@ export class ComponentListItem<T extends ArduinoComponent> extends React.Compone
         await this.props.install(item, this.state.selectedVersion);
     }
 
+    protected async uninstall(item: T): Promise<void> {
+        await this.props.uninstall(item);
+    }
+
     protected onVersionChange(version: Installable.Version) {
         this.setState({ selectedVersion: version });
     }
 
     render(): React.ReactNode {
         const { item, itemRenderer } = this.props;
-        return itemRenderer.renderItem(Object.assign(this.state, { item }), this.install.bind(this), this.onVersionChange.bind(this));
+        return itemRenderer.renderItem(
+            Object.assign(this.state, { item }),
+            this.install.bind(this),
+            this.uninstall.bind(this),
+            this.onVersionChange.bind(this)
+        );
     }
 
 }
@@ -35,6 +44,7 @@ export namespace ComponentListItem {
     export interface Props<T extends ArduinoComponent> {
         readonly item: T;
         readonly install: (item: T, version?: Installable.Version) => Promise<void>;
+        readonly uninstall: (item: T) => Promise<void>;
         readonly itemRenderer: ListItemRenderer<T>;
     }
 
diff --git a/arduino-ide-extension/src/browser/components/component-list/component-list.tsx b/arduino-ide-extension/src/browser/components/component-list/component-list.tsx
index d2ea87d5..8c40e8d3 100644
--- a/arduino-ide-extension/src/browser/components/component-list/component-list.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/component-list.tsx
@@ -31,7 +31,8 @@ export class ComponentList<T extends ArduinoComponent> extends React.Component<C
             key={this.props.itemLabel(item)}
             item={item}
             itemRenderer={this.props.itemRenderer}
-            install={this.props.install} />
+            install={this.props.install}
+            uninstall={this.props.uninstall} />
     }
 
 }
@@ -43,6 +44,7 @@ export namespace ComponentList {
         readonly itemLabel: (item: T) => string;
         readonly itemRenderer: ListItemRenderer<T>;
         readonly install: (item: T, version?: Installable.Version) => Promise<void>;
+        readonly uninstall: (item: T) => Promise<void>;
         readonly resolveContainer: (element: HTMLElement) => void;
     }
 
diff --git a/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx b/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
index 8493de1e..4c717149 100644
--- a/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
@@ -1,10 +1,11 @@
 import * as React from 'react';
 import debounce = require('lodash.debounce');
 import { Event } from '@theia/core/lib/common/event';
+import { ConfirmDialog } from '@theia/core/lib/browser/dialogs';
 import { Searchable } from '../../../common/protocol/searchable';
 import { Installable } from '../../../common/protocol/installable';
 import { ArduinoComponent } from '../../../common/protocol/arduino-component';
-import { InstallationProgressDialog } from '../installation-progress-dialog';
+import { InstallationProgressDialog, UninstallationProgressDialog } from '../progress-dialog';
 import { SearchBar } from './search-bar';
 import { ListWidget } from './list-widget';
 import { ComponentList } from './component-list';
@@ -59,6 +60,7 @@ export class FilterableListContainer<T extends ArduinoComponent> extends React.C
             itemLabel={itemLabel}
             itemRenderer={itemRenderer}
             install={this.install.bind(this)}
+            uninstall={this.uninstall.bind(this)}
             resolveContainer={resolveContainer}
         />
     }
@@ -96,6 +98,28 @@ export class FilterableListContainer<T extends ArduinoComponent> extends React.C
         }
     }
 
+    protected async uninstall(item: T): Promise<void> {
+        const uninstall = await new ConfirmDialog({
+            title: 'Uninstall',
+            msg: `Do you want to uninstall ${item.name}?`,
+            ok: 'Yes',
+            cancel: 'No'
+        }).open();
+        if (!uninstall) {
+            return;
+        }
+        const { installable, searchable, itemLabel } = this.props;
+        const dialog = new UninstallationProgressDialog(itemLabel(item));
+        dialog.open();
+        try {
+            await installable.uninstall({ item });
+            const { items } = await searchable.search({ query: this.state.filterText });
+            this.setState({ items: this.sort(items) });
+        } finally {
+            dialog.close();
+        }
+    }
+
 }
 
 export namespace FilterableListContainer {
diff --git a/arduino-ide-extension/src/browser/components/component-list/list-item-renderer.tsx b/arduino-ide-extension/src/browser/components/component-list/list-item-renderer.tsx
index f8baa001..478caaab 100644
--- a/arduino-ide-extension/src/browser/components/component-list/list-item-renderer.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/list-item-renderer.tsx
@@ -22,15 +22,17 @@ export class ListItemRenderer<T extends ArduinoComponent> {
     renderItem(
         input: ComponentListItem.State & { item: T },
         install: (item: T) => Promise<void>,
+        uninstall: (item: T) => Promise<void>,
         onVersionChange: (version: Installable.Version) => void
     ): React.ReactNode {
 
         const { item } = input;
         const name = <span className='name'>{item.name}</span>;
         const author = <span className='author'>{item.author}</span>;
+        const onClickUninstall = () => uninstall(item);
         const installedVersion = !!item.installedVersion && <div className='version-info'>
             <span className='version'>Version {item.installedVersion}</span>
-            <span className='installed'>INSTALLED</span>
+            <span className='installed' onClick={onClickUninstall} />
         </div>;
 
         const summary = <div className='summary'>{item.summary}</div>;
diff --git a/arduino-ide-extension/src/browser/components/installation-progress-dialog.tsx b/arduino-ide-extension/src/browser/components/progress-dialog.tsx
similarity index 55%
rename from arduino-ide-extension/src/browser/components/installation-progress-dialog.tsx
rename to arduino-ide-extension/src/browser/components/progress-dialog.tsx
index a59c49f4..bfe564d1 100644
--- a/arduino-ide-extension/src/browser/components/installation-progress-dialog.tsx
+++ b/arduino-ide-extension/src/browser/components/progress-dialog.tsx
@@ -10,3 +10,14 @@ export class InstallationProgressDialog extends AbstractDialog<undefined> {
     }
 
 }
+
+export class UninstallationProgressDialog extends AbstractDialog<undefined> {
+
+    readonly value = undefined;
+
+    constructor(componentName: string) {
+        super({ title: 'Uninstallation in progress' });
+        this.contentNode.textContent = `Uninstalling ${componentName}. Please wait...`;
+    }
+
+}
diff --git a/arduino-ide-extension/src/browser/style/list-widget.css b/arduino-ide-extension/src/browser/style/list-widget.css
index 2ca4f3a5..3f8d44b5 100644
--- a/arduino-ide-extension/src/browser/style/list-widget.css
+++ b/arduino-ide-extension/src/browser/style/list-widget.css
@@ -116,8 +116,9 @@ https://github.com/arduino/arduino-pro-ide/issues/82 */
     color: var(--theia-ui-font-color2);
 }
 
-.component-list-item .header .installed {
+.component-list-item .header .installed:before {
     margin-left: 4px;
+    display: inline-block;
     justify-self: end;
     background-color: var(--theia-accent-color1);
     padding: 2px 4px 2px 4px;
@@ -125,6 +126,13 @@ https://github.com/arduino/arduino-pro-ide/issues/82 */
     font-weight: bold;
     max-height: calc(1em + 4px);
     color: var(--theia-inverse-ui-font-color0);
+    content: 'INSTALLED';
+}
+
+.component-list-item .header .installed:hover:before {
+    background-color: var(--theia-inverse-ui-font-color0);
+    color: var(--theia-accent-color1);
+    content: 'UNINSTALL';
 }
 
 .component-list-item[min-width~="170px"] .footer {
diff --git a/arduino-ide-extension/src/common/protocol/boards-service.ts b/arduino-ide-extension/src/common/protocol/boards-service.ts
index a6b55c3a..32cbc1d8 100644
--- a/arduino-ide-extension/src/common/protocol/boards-service.ts
+++ b/arduino-ide-extension/src/common/protocol/boards-service.ts
@@ -46,10 +46,15 @@ export interface BoardInstalledEvent {
     readonly pkg: Readonly<BoardPackage>;
 }
 
+export interface BoardUninstalledEvent {
+    readonly pkg: Readonly<BoardPackage>;
+}
+
 export const BoardsServiceClient = Symbol('BoardsServiceClient');
 export interface BoardsServiceClient {
     notifyAttachedBoardsChanged(event: AttachedBoardsChangeEvent): void;
     notifyBoardInstalled(event: BoardInstalledEvent): void
+    notifyBoardUninstalled(event: BoardUninstalledEvent): void
 }
 
 export const BoardsServicePath = '/services/boards-service';
diff --git a/arduino-ide-extension/src/common/protocol/installable.ts b/arduino-ide-extension/src/common/protocol/installable.ts
index 4d4df38a..ae7334d2 100644
--- a/arduino-ide-extension/src/common/protocol/installable.ts
+++ b/arduino-ide-extension/src/common/protocol/installable.ts
@@ -6,6 +6,11 @@ export interface Installable<T extends ArduinoComponent> {
      * If `options.version` is specified, that will be installed. Otherwise, `item.availableVersions[0]`.
      */
     install(options: { item: T, version?: Installable.Version }): Promise<void>;
+
+    /**
+     * Uninstalls the given component. It is a NOOP if not installed.
+     */
+    uninstall(options: { item: T }): Promise<void>;
 }
 export namespace Installable {
     export type Version = string;
diff --git a/arduino-ide-extension/src/node/boards-service-impl.ts b/arduino-ide-extension/src/node/boards-service-impl.ts
index f6be2e0c..dcfaeae6 100644
--- a/arduino-ide-extension/src/node/boards-service-impl.ts
+++ b/arduino-ide-extension/src/node/boards-service-impl.ts
@@ -2,7 +2,7 @@ import * as PQueue from 'p-queue';
 import { injectable, inject, postConstruct, named } from 'inversify';
 import { ILogger } from '@theia/core/lib/common/logger';
 import { BoardsService, AttachedSerialBoard, BoardPackage, Board, AttachedNetworkBoard, BoardsServiceClient, Port } from '../common/protocol/boards-service';
-import { PlatformSearchReq, PlatformSearchResp, PlatformInstallReq, PlatformInstallResp, PlatformListReq, PlatformListResp, Platform } from './cli-protocol/commands/core_pb';
+import { PlatformSearchReq, PlatformSearchResp, PlatformInstallReq, PlatformInstallResp, PlatformListReq, PlatformListResp, Platform, PlatformUninstallReq } from './cli-protocol/commands/core_pb';
 import { CoreClientProvider } from './core-client-provider';
 import { BoardListReq, BoardListResp } from './cli-protocol/commands/board_pb';
 import { ToolOutputServiceServer } from '../common/protocol/tool-output-service';
@@ -288,4 +288,37 @@ export class BoardsServiceImpl implements BoardsService {
         console.info("Board installation done", pkg);
     }
 
+    async uninstall(options: { item: BoardPackage }): Promise<void> {
+        const pkg = options.item;
+        const coreClient = await this.coreClientProvider.getClient();
+        if (!coreClient) {
+            return;
+        }
+        const { client, instance } = coreClient;
+
+        const [platform, boardName] = pkg.id.split(":");
+
+        const req = new PlatformUninstallReq();
+        req.setInstance(instance);
+        req.setArchitecture(boardName);
+        req.setPlatformPackage(platform);
+
+        console.info("Starting board uninstallation", pkg);
+        const resp = client.platformUninstall(req);
+        resp.on('data', (r: PlatformInstallResp) => {
+            const prog = r.getProgress();
+            if (prog && prog.getFile()) {
+                this.toolOutputService.publishNewOutput("board uninstall", `uninstalling ${prog.getFile()}\n`)
+            }
+        });
+        await new Promise<void>((resolve, reject) => {
+            resp.on('end', resolve);
+            resp.on('error', reject);
+        });
+        if (this.client) {
+            this.client.notifyBoardUninstalled({ pkg });
+        }
+        console.info("Board uninstallation done", pkg);
+    }
+
 }
diff --git a/arduino-ide-extension/src/node/library-service-impl.ts b/arduino-ide-extension/src/node/library-service-impl.ts
index d56664b2..34193c67 100644
--- a/arduino-ide-extension/src/node/library-service-impl.ts
+++ b/arduino-ide-extension/src/node/library-service-impl.ts
@@ -3,7 +3,7 @@ import { Library, LibraryService } from '../common/protocol/library-service';
 import { CoreClientProvider } from './core-client-provider';
 import {
     LibrarySearchReq, LibrarySearchResp, LibraryListReq, LibraryListResp, LibraryRelease,
-    InstalledLibrary, LibraryInstallReq, LibraryInstallResp
+    InstalledLibrary, LibraryInstallReq, LibraryInstallResp, LibraryUninstallReq
 } from './cli-protocol/commands/lib_pb';
 import { ToolOutputServiceServer } from '../common/protocol/tool-output-service';
 import { Installable } from '../common/protocol/installable';
@@ -90,6 +90,32 @@ export class LibraryServiceImpl implements LibraryService {
         });
     }
 
+    async uninstall(options: { item: Library }): Promise<void> {
+        const library = options.item;
+        const coreClient = await this.coreClientProvider.getClient();
+        if (!coreClient) {
+            return;
+        }
+        const { client, instance } = coreClient;
+
+        const req = new LibraryUninstallReq();
+        req.setInstance(instance);
+        req.setName(library.name);
+        req.setVersion(library.installedVersion!);
+
+        const resp = client.libraryInstall(req);
+        resp.on('data', (r: LibraryInstallResp) => {
+            const prog = r.getProgress();
+            if (prog) {
+                this.toolOutputService.publishNewOutput("library uninstall", `uninstalling ${prog.getFile()}: ${prog.getCompleted()}%\n`)
+            }
+        });
+        await new Promise<void>((resolve, reject) => {
+            resp.on('end', resolve);
+            resp.on('error', reject);
+        });
+    }
+
 }
 
 function toLibrary(tpl: Partial<Library>, release: LibraryRelease, availableVersions: string[]): Library {