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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 169k 31.1k

  2. TypeScript TypeScript Public

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

    TypeScript 103k 12.7k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 116k 6.9k

  4. terminal terminal Public

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

    C++ 97.4k 8.5k

  5. semantic-kernel semantic-kernel Public

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

    C# 23.5k 3.6k

Repositories

Showing 10 of 6701 repositories
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 4,827 MIT 251 797 (2 issues need help) 52 Updated Mar 17, 2025
  • CSS-Exchange Public

    Exchange Server support tools and scripts

    microsoft/CSS-Exchange’s past year of commit activity
    PowerShell 1,231 MIT 347 128 (15 issues need help) 5 Updated Mar 17, 2025
  • vscode-loc Public

    VS Code Localization Extension

    microsoft/vscode-loc’s past year of commit activity
    601 320 36 4 Updated Mar 17, 2025
  • PSRule Public

    Validate infrastructure as code (IaC) and objects using PowerShell rules.

    microsoft/PSRule’s past year of commit activity
    C# 413 MIT 54 52 (2 issues need help) 2 Updated Mar 17, 2025
  • react-native-test-app Public

    react-native-test-app provides an app for all supported platforms as a package

    microsoft/react-native-test-app’s past year of commit activity
    TypeScript 633 MIT 94 17 (1 issue needs help) 2 Updated Mar 17, 2025
  • typescript-go Public

    Staging repo for development of native port of TypeScript

    microsoft/typescript-go’s past year of commit activity
    Go 17,239 Apache-2.0 481 38 52 Updated Mar 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 our open source R&D automation tool RD-Agent, which lets AI drive data-driven AI.

    microsoft/RD-Agent’s past year of commit activity
    Python 2,849 MIT 232 15 20 Updated Mar 17, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 15,997 MIT 3,096 2,575 567 Updated Mar 17, 2025
  • genaiscript Public

    Automatable GenAI Scripting

    microsoft/genaiscript’s past year of commit activity
    TypeScript 2,363 MIT 162 77 (1 issue needs help) 4 Updated Mar 17, 2025
  • rnx-kit Public

    Modern, scalable tools. Exceptional developer experience.

    microsoft/rnx-kit’s past year of commit activity
    TypeScript 1,594 MIT 100 55 (5 issues need help) 3 Updated Mar 17, 2025
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Developer Program Member