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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 37.4k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 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++ 101k 9k

  5. semantic-kernel semantic-kernel Public

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

    C# 27k 4.4k

Repositories

Showing 10 of 7489 repositories
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    microsoft/msquic’s past year of commit activity
    C 4,593 MIT 635 209 (24 issues need help) 71 Updated Jan 15, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 180,667 MIT 37,380 5,000+ (544 issues need help) 966 Updated Jan 15, 2026
  • powerplatform-build-tools Public

    Power Platform Build Tools automate common build and deployment tasks related to Power Platform. This includes synchronization of solution metadata (a.k.a. solutions) between development environments and source control, generating build artifacts, deploying to downstream environments, provisioning/de-provisioning of environments, and the ability…

    microsoft/powerplatform-build-tools’s past year of commit activity
    TypeScript 253 MIT 61 150 17 Updated Jan 15, 2026
  • onnxruntime Public

    ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,986 MIT 3,647 838 378 Updated Jan 15, 2026
  • lisa Public

    LISA is developed and maintained by Microsoft, to empower Linux validation.

    microsoft/lisa’s past year of commit activity
    Python 319 MIT 226 35 (3 issues need help) 34 Updated Jan 15, 2026
  • vscode-cpptools Public

    Official repository for the Microsoft C/C++ extension for VS Code.

    microsoft/vscode-cpptools’s past year of commit activity
    TypeScript 6,008 1,692 1,405 (198 issues need help) 13 Updated Jan 15, 2026
  • amplifier-bundle-issues Public

    Amplifier issues bundle

    microsoft/amplifier-bundle-issues’s past year of commit activity
    Python 0 MIT 2 2 0 Updated Jan 15, 2026
  • trident Public

    Azure Linux servicing agent - security focused install, provisioning, and update

    microsoft/trident’s past year of commit activity
    Rust 19 MIT 15 14 15 Updated Jan 15, 2026
  • Foundry-Local Public
    microsoft/Foundry-Local’s past year of commit activity
    Svelte 1,898 235 67 11 Updated Jan 15, 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# 11,663 MIT 632 24 (13 issues need help) 15 Updated Jan 15, 2026
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