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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 174k 33.5k

  2. TypeScript TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 120k 7.1k

  4. terminal terminal Public

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

    C++ 98.8k 8.6k

  5. semantic-kernel semantic-kernel Public

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

    C# 25.3k 4k

Repositories

Showing 10 of 6949 repositories
  • ifc Public

    SDK for the IFC specification at https://github.com/microsoft/ifc-spec

    microsoft/ifc’s past year of commit activity
    C++ 62 17 8 5 Updated Jul 4, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,506 MIT 5,197 951 165 Updated Jul 4, 2025
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat’s past year of commit activity
    HTML 1,693 MIT 1,585 392 66 Updated Jul 4, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 17,094 MIT 3,317 2,011 262 Updated Jul 4, 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++ 4,066 MIT 367 382 (25 issues need help) 27 Updated Jul 4, 2025
  • SPTAG Public

    A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

    microsoft/SPTAG’s past year of commit activity
    C++ 4,918 MIT 598 115 (1 issue needs help) 20 Updated Jul 4, 2025
  • fabric-toolbox Public

    Fabric toolbox is a repository of tools, accelerators, scripts, and samples to accelerate your success with Microsoft Fabric, brought to you by Fabric CAT.

    microsoft/fabric-toolbox’s past year of commit activity
    Jupyter Notebook 318 MIT 104 45 4 Updated Jul 4, 2025
  • PowerToys Public

    Windows system utilities to maximize productivity

    microsoft/PowerToys’s past year of commit activity
    C# 120,488 MIT 7,145 5,000+ (218 issues need help) 89 Updated Jul 4, 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# 11,284 MIT 581 17 (12 issues need help) 17 Updated Jul 4, 2025
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,270 MIT 539 85 (2 issues need help) 52 Updated Jul 4, 2025
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