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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 180k 36.9k

  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# 127k 7.5k

  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# 26.9k 4.4k

Repositories

Showing 10 of 7441 repositories
  • tyger Public

    Remote signal processing.

    microsoft/tyger’s past year of commit activity
    Go 55 MIT 17 11 0 Updated Dec 15, 2025
  • graphrag Public

    A modular graph-based Retrieval-Augmented Generation (RAG) system

    microsoft/graphrag’s past year of commit activity
    Python 29,774 MIT 3,140 46 53 Updated Dec 15, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,657 MIT 36,882 5,000+ (566 issues need help) 967 Updated Dec 15, 2025
  • teams.net Public

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

    microsoft/teams.net’s past year of commit activity
    C# 20 MIT 15 58 16 Updated Dec 15, 2025
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    microsoft/onnxruntime-genai’s past year of commit activity
    C++ 904 MIT 239 133 27 Updated Dec 15, 2025
  • codeql Public Forked from github/codeql

    CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security

    microsoft/codeql’s past year of commit activity
    C# 19 MIT 2,118 14 15 Updated Dec 15, 2025
  • msticpy Public

    Microsoft Threat Intelligence Security Tools

    microsoft/msticpy’s past year of commit activity
    Python 1,922 340 9 (1 issue needs help) 5 Updated Dec 15, 2025
  • WinAppCli Public

    The Windows App Development CLI is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

    microsoft/WinAppCli’s past year of commit activity
    C# 18 MIT 3 34 1 Updated Dec 15, 2025
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,313 MIT 569 89 (3 issues need help) 36 Updated Dec 15, 2025
  • 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# 11,616 MIT 624 25 (13 issues need help) 13 Updated Dec 15, 2025
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