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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 175k 34k

  2. TypeScript TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 121k 7.2k

  4. terminal terminal Public

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

    C++ 99k 8.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 25.6k 4.1k

Repositories

Showing 10 of 6981 repositories
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 175,003 MIT 33,974 5,000+ (429 issues need help) 640 Updated Jul 27, 2025
  • PowerToys Public

    Windows system utilities to maximize productivity

    microsoft/PowerToys’s past year of commit activity
    C# 121,153 MIT 7,189 5,000+ (220 issues need help) 92 Updated Jul 27, 2025
  • hcsshim Public

    Windows - Host Compute Service Shim

    microsoft/hcsshim’s past year of commit activity
    Go 620 MIT 269 131 66 Updated Jul 27, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,563 MIT 5,255 969 176 Updated Jul 27, 2025
  • model-mondays Public

    Model Mondays is a weekly livestream with Discord office hours - to help you navigate the fast-moving ecosystem of generative AI models with 5-minute roundups and 15-minute spotlight sessions. Build your model IQ - and make informed model choices!

    microsoft/model-mondays’s past year of commit activity
    Jupyter Notebook 138 MIT 22 0 1 Updated Jul 27, 2025
  • vstest Public

    Visual Studio Test Platform is the runner and engine that powers test explorer and vstest.console.

    microsoft/vstest’s past year of commit activity
    C# 935 MIT 338 26 5 Updated Jul 27, 2025
  • vsts-extension-retrospectives Public

    An Azure DevOps extension for efficient retrospectives

    microsoft/vsts-extension-retrospectives’s past year of commit activity
    TypeScript 197 MIT 88 200 (3 issues need help) 11 Updated Jul 27, 2025
  • playwright Public

    Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

    microsoft/playwright’s past year of commit activity
    TypeScript 75,234 Apache-2.0 4,385 847 21 Updated Jul 27, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 17,311 MIT 3,358 2,029 257 Updated Jul 27, 2025
  • SAIMOpt.jl Public

    Julia back-end for using the AOC/AIM optimization service

    microsoft/SAIMOpt.jl’s past year of commit activity
    Julia 5 MIT 2 0 0 Updated Jul 27, 2025
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