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Open source projects and samples from Microsoft
README.md

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 181k 37.3k

  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# 128k 7.6k

  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# 27k 4.4k

Repositories

Showing 10 of 7476 repositories
  • qdk Public

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

    microsoft/qdk’s past year of commit activity
    Rust 824 MIT 161 146 (1 issue needs help) 8 Updated Jan 13, 2026
  • copilot-camp Public

    Hands-on labs for extending Microsoft 365 Copilot and building custom engine agents

    microsoft/copilot-camp’s past year of commit activity
    TypeScript 426 MIT 113 39 (1 issue needs help) 32 Updated Jan 13, 2026
  • pxt Public

    Microsoft MakeCode (PXT - Programming eXperience Toolkit)

    microsoft/pxt’s past year of commit activity
    TypeScript 2,252 MIT 615 212 (2 issues need help) 73 Updated Jan 13, 2026
  • typeagent-py Public

    Structured RAG: ingest, index, query

    microsoft/typeagent-py’s past year of commit activity
    Python 535 MIT 41 6 2 Updated Jan 13, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,960 MIT 3,647 836 380 Updated Jan 13, 2026
  • cpp_client_telemetry Public

    1DS C++ SDK

    microsoft/cpp_client_telemetry’s past year of commit activity
    C 95 Apache-2.0 58 149 (11 issues need help) 26 Updated Jan 13, 2026
  • pxt-arcade Public

    Arcade game editor based on Microsoft MakeCode

    microsoft/pxt-arcade’s past year of commit activity
    TypeScript 532 MIT 241 521 (22 issues need help) 45 Updated Jan 13, 2026
  • winappCli Public

    The Windows App Development CLI is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

    microsoft/winappCli’s past year of commit activity
    C# 29 MIT 4 29 5 Updated Jan 13, 2026
  • jl-glove Public

    ICLR 2025: We employ GloVe and random projection theory to infer immunologically meaningful T-cell receptor embeddings from adaptive immune repertoires

    microsoft/jl-glove’s past year of commit activity
    Python 2 MIT 2 0 3 Updated Jan 13, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 180,584 MIT 37,343 5,000+ (546 issues need help) 962 Updated Jan 13, 2026
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