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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 184k 39.3k

  2. TypeScript TypeScript Public

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

    TypeScript 109k 13.4k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C# 132k 7.9k

  4. terminal terminal Public

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

    C++ 103k 9.2k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.7k 4.6k

Repositories

Showing 10 of 7776 repositories
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx’s past year of commit activity
    C# 1,002 MIT 292 176 17 Updated Apr 19, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,494 MIT 6,733 1,147 328 Updated Apr 19, 2026
  • apm Public

    Agent Package Manager

    microsoft/apm’s past year of commit activity
    Python 1,877 MIT 114 56 (3 issues need help) 37 Updated Apr 19, 2026
  • AzureLinuxVulnerabilityData Public

    Contains a regularly published and updated vulnerability database for Vulnerability Monitoring.

    microsoft/AzureLinuxVulnerabilityData’s past year of commit activity
    44 MIT 17 0 0 Updated Apr 19, 2026
  • CsWin32 Public

    A source generator to add a user-defined set of Win32 P/Invoke methods and supporting types to a C# project.

    microsoft/CsWin32’s past year of commit activity
    C# 2,479 MIT 119 123 (1 issue needs help) 14 Updated Apr 19, 2026
  • CmdPal-Extensions Public

    Community gallery of extensions for Microsoft PowerToys Command Palette — submit your extension here to make it discoverable and installable from within Command Palette.

    microsoft/CmdPal-Extensions’s past year of commit activity
    6 MIT 8 0 3 Updated Apr 19, 2026
  • beachball Public

    The Sunniest Semantic Version Bumper

    microsoft/beachball’s past year of commit activity
    TypeScript 810 MIT 91 94 (2 issues need help) 13 Updated Apr 19, 2026
  • typescript-benchmarking Public

    Infrastructure for TypeScript's performance benchmarking system

    microsoft/typescript-benchmarking’s past year of commit activity
    TypeScript 25 MIT 4 10 3 Updated Apr 19, 2026
  • aitour26-WRK542-prototype-agents-with-Foundry-toolkit-and-model-context-protocol Public
    microsoft/aitour26-WRK542-prototype-agents-with-Foundry-toolkit-and-model-context-protocol’s past year of commit activity
    Python 45 MIT 35 0 8 Updated Apr 19, 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# 11,797 MIT 653 26 (13 issues need help) 28 Updated Apr 19, 2026
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