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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 170k 31.4k

  2. TypeScript TypeScript Public

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

    TypeScript 104k 12.8k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 117k 6.9k

  4. terminal terminal Public

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

    C++ 97.6k 8.5k

  5. semantic-kernel semantic-kernel Public

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

    C# 23.8k 3.7k

Repositories

Showing 10 of 6739 repositories
  • 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# 10,950 MIT 565 19 (11 issues need help) 14 Updated Apr 4, 2025
  • promptpex Public

    Prompt Exploration

    microsoft/promptpex’s past year of commit activity
    TeX 63 CC-BY-4.0 3 29 6 Updated Apr 4, 2025
  • semantic-kernel Public

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

    microsoft/semantic-kernel’s past year of commit activity
    C# 23,844 MIT 3,664 425 37 Updated Apr 4, 2025
  • FluidFramework Public

    Library for building distributed, real-time collaborative web applications

    microsoft/FluidFramework’s past year of commit activity
    TypeScript 4,796 MIT 543 21 104 Updated Apr 4, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 16,182 MIT 3,135 2,629 571 Updated Apr 4, 2025
  • spark.js Public

    a suite of packages used to build on the Teams Platform.

    microsoft/spark.js’s past year of commit activity
    TypeScript 9 MIT 5 45 4 Updated Apr 4, 2025
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,250 MIT 532 89 (2 issues need help) 29 Updated Apr 4, 2025
  • verona Public

    Research programming language for concurrent ownership

    microsoft/verona’s past year of commit activity
    C++ 3,603 MIT 167 12 1 Updated Apr 4, 2025
  • planetary-computer-tasks Public

    PC Tasks: A framework for processing and ingesting data into the Planetary Computer

    microsoft/planetary-computer-tasks’s past year of commit activity
    Python 37 MIT 15 5 14 Updated Apr 4, 2025
  • DirectXShaderCompiler Public

    This repo hosts the source for the DirectX Shader Compiler which is based on LLVM/Clang.

    microsoft/DirectXShaderCompiler’s past year of commit activity
    C++ 3,239 740 428 130 Updated Apr 4, 2025
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