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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 168k 30.7k

  2. TypeScript TypeScript Public

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

    TypeScript 102k 12.7k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 115k 6.8k

  4. terminal terminal Public

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

    C++ 97.2k 8.5k

  5. semantic-kernel semantic-kernel Public

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

    C# 23.3k 3.5k

Repositories

Showing 10 of 6677 repositories
  • cppwinrt Public

    C++/WinRT

    microsoft/cppwinrt’s past year of commit activity
    C++ 1,704 MIT 247 1 2 Updated Mar 1, 2025
  • ga4gh-tes Public

    C# implementation of the GA4GH TES API; provides distributed batch task execution on Microsoft Azure

    microsoft/ga4gh-tes’s past year of commit activity
    C# 34 MIT 27 55 (3 issues need help) 18 Updated Mar 1, 2025
  • CromwellOnAzure Public

    Microsoft Genomics implementation of the Broad Institute's Cromwell workflow engine on Azure

    microsoft/CromwellOnAzure’s past year of commit activity
    C# 135 MIT 57 46 (1 issue needs help) 7 Updated Mar 1, 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# 10,845 MIT 559 27 (13 issues need help) 21 Updated Mar 1, 2025
  • onnxruntime-extensions Public

    onnxruntime-extensions: A specialized pre- and post- processing library for ONNX Runtime

    microsoft/onnxruntime-extensions’s past year of commit activity
    C++ 361 MIT 93 70 17 Updated Mar 1, 2025
  • qsharp Public

    Azure Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qsharp’s past year of commit activity
    Rust 615 MIT 109 137 (1 issue needs help) 7 Updated Mar 1, 2025
  • 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 4,202 MIT 552 173 (15 issues need help) 49 Updated Mar 1, 2025
  • markitdown Public

    Python tool for converting files and office documents to Markdown.

    microsoft/markitdown’s past year of commit activity
    HTML 39,228 MIT 1,816 140 (3 issues need help) 47 Updated Mar 1, 2025
  • SAIMOpt.jl Public

    Julia back-end for using the AOC/AIM optimization service

    microsoft/SAIMOpt.jl’s past year of commit activity
    Julia 3 MIT 0 0 0 Updated Mar 1, 2025
  • WindowsAppSDK Public

    The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

    microsoft/WindowsAppSDK’s past year of commit activity
    C++ 3,930 MIT 344 444 23 Updated Mar 1, 2025
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