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Open source projects and samples from Microsoft

Open Source at Microsoft

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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 Public

    Visual Studio Code

    TypeScript 172k 32.6k

  2. TypeScript Public

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

    TypeScript 105k 12.8k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 119k 7k

  4. terminal Public

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

    C++ 98.3k 8.6k

  5. semantic-kernel Public

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

    C# 24.7k 3.9k

Repositories

Showing 10 of 6859 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    PowerShell 9,359 MIT 5,068 968 161 Updated May 24, 2025
  • vscode Public

    Visual Studio Code

    TypeScript 172,459 MIT 32,578 5,000+ (402 issues need help) 547 Updated May 24, 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.

    C# 11,127 MIT 569 17 (11 issues need help) 16 Updated May 24, 2025
  • PowerToys Public

    Windows system utilities to maximize productivity

  • Kotlin 622 MIT 113 1 3 Updated May 24, 2025
  • lisa Public

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

    Python 282 MIT 195 35 (3 issues need help) 31 Updated May 24, 2025
  • RD-Agent Public

    Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through our open source R&D automation tool R&D-Agent, which lets AI drive data-driven AI.

    Python 4,549 MIT 408 24 31 Updated May 24, 2025
  • fluentui-charting-contrib Public

    Contributor tools and guides for fluentui charting library

    TypeScript 16 MIT 13 2 8 Updated May 24, 2025
  • ApplicationInsights-JS Public

    Microsoft Application Insights SDK for JavaScript

    TypeScript 663 MIT 245 97 (2 issues need help) 15 Updated May 24, 2025
  • finops-toolkit Public

    Tools and resources to help you adopt and implement FinOps capabilities that automate and extend the Microsoft Cloud.

    PowerShell 395 MIT 142 195 (33 issues need help) 30 Updated May 24, 2025