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Open source projects and samples from Microsoft
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Open Source at Microsoft

Get Involved

Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

Visit opensource.microsoft.com to learn more!

Microsoft projects adopt the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ.

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  1. vscode vscode Public

    Visual Studio Code

    TypeScript 181k 37.6k

  2. TypeScript TypeScript Public

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

    TypeScript 108k 13.2k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 128k 7.6k

  4. terminal terminal Public

    The new Windows Terminal and the original Windows console host, all in the same place!

    C++ 102k 9k

  5. semantic-kernel semantic-kernel Public

    Integrate cutting-edge LLM technology quickly and easily into your apps

    C# 27.1k 4.4k

Repositories

Showing 10 of 7514 repositories
  • react-native-windows Public

    A framework for building native Windows apps with React.

    microsoft/react-native-windows’s past year of commit activity
    C++ 17,164 1,188 698 (12 issues need help) 56 Updated Jan 24, 2026
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 9,332 MIT 1,601 0 136 Updated Jan 24, 2026
  • vscode-mssql Public

    Visual Studio Code SQL Server extension.

    microsoft/vscode-mssql’s past year of commit activity
    TypeScript 1,826 568 141 19 Updated Jan 24, 2026
  • vscode-extension-telemetry Public

    Node module to help VS Code extensions send telemetry using application insights

    microsoft/vscode-extension-telemetry’s past year of commit activity
    TypeScript 149 55 8 (1 issue needs help) 0 Updated Jan 24, 2026
  • amplifier-app-cli Public

    Reference implementation of CLI interface for Amplifier project

    microsoft/amplifier-app-cli’s past year of commit activity
    Python 9 MIT 16 2 5 Updated Jan 24, 2026
  • mscclpp Public

    MSCCL++: A GPU-driven communication stack for scalable AI applications

    microsoft/mscclpp’s past year of commit activity
    C++ 454 MIT 80 11 25 Updated Jan 24, 2026
  • garnet Public

    Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

    microsoft/garnet’s past year of commit activity
    C# 11,680 MIT 631 20 (11 issues need help) 12 Updated Jan 24, 2026
  • teams.ts Public

    a suite of packages used to build on the Teams Platform.

    microsoft/teams.ts’s past year of commit activity
    TypeScript 30 MIT 25 70 (1 issue needs help) 15 Updated Jan 24, 2026
  • quicreach Public

    A 'ping' equivalent tool for QUIC.

    microsoft/quicreach’s past year of commit activity
    C++ 136 MIT 34 3 (1 issue needs help) 0 Updated Jan 24, 2026
  • playwright Public

    Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

    microsoft/playwright’s past year of commit activity
    TypeScript 81,631 Apache-2.0 5,044 576 19 Updated Jan 24, 2026
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