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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 7444 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,020 MIT 5,758 1,092 839 Updated Dec 17, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,727 MIT 36,941 5,000+ (567 issues need help) 921 Updated Dec 17, 2025
  • OpenApi.ApiManifest Public

    A parser/validator for a document that describes the HTTP API dependencies that an application has.

    microsoft/OpenApi.ApiManifest’s past year of commit activity
    C# 27 MIT 12 6 (1 issue needs help) 1 Updated Dec 17, 2025
  • rnx-kit Public

    Modern, scalable tools. Exceptional developer experience.

    microsoft/rnx-kit’s past year of commit activity
    TypeScript 1,690 MIT 113 45 (5 issues need help) 2 Updated Dec 17, 2025
  • presidio Public

    An open-source framework for detecting, redacting, masking, and anonymizing sensitive data (PII) across text, images, and structured data. Supports NLP, pattern matching, and customizable pipelines.

    microsoft/presidio’s past year of commit activity
    Python 6,413 MIT 879 58 (9 issues need help) 12 Updated Dec 17, 2025
  • qlib-server Public

    Qlib-Server is the data server system for Qlib. It enable Qlib to run in online mode. Under online mode, the data will be deployed as a shared data service. The data and their cache will be shared by all the clients. The data retrieval performance is expected to be improved due to a higher rate of cache hits. It will consume less disk space, too.

    microsoft/qlib-server’s past year of commit activity
    Python 327 MIT 95 5 1 Updated Dec 17, 2025
  • tyger Public

    Remote signal processing.

    microsoft/tyger’s past year of commit activity
    Go 55 MIT 17 11 2 Updated Dec 17, 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# 11,619 MIT 626 24 (13 issues need help) 13 Updated Dec 17, 2025
  • CAIRA Public

    Composable AI Reference Architectures (CAIRA)

    microsoft/CAIRA’s past year of commit activity
    HCL 178 MIT 38 1 2 Updated Dec 17, 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 R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report

    microsoft/RD-Agent’s past year of commit activity
    Python 9,840 MIT 1,085 61 65 Updated Dec 17, 2025
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