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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 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 7472 repositories
  • agent-framework Public

    A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

    microsoft/agent-framework’s past year of commit activity
    Python 6,481 MIT 1,015 527 98 Updated Jan 12, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 180,573 MIT 37,341 5,000+ (546 issues need help) 968 Updated Jan 12, 2026
  • CCF Public

    Confidential Consortium Framework

    microsoft/CCF’s past year of commit activity
    C++ 842 Apache-2.0 247 84 7 Updated Jan 12, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,956 MIT 3,648 842 388 Updated Jan 12, 2026
  • SimpleL7Proxy Public

    Container based solution to do performance based proxy requests to APIM backends.

    microsoft/SimpleL7Proxy’s past year of commit activity
    C# 9 MIT 8 0 3 Updated Jan 12, 2026
  • oxidizer Public

    Oxidizer is a platform for Rust service development which bridges the gaps in the crate ecosystem to deliver a turn-key solution to enable the efficient creation of high-scale high-availability and high-performance services in Rust.

    microsoft/oxidizer’s past year of commit activity
    Rust 43 MIT 12 10 10 Updated Jan 12, 2026
  • vscode-python-environments Public

    VS Code extension for Python environment and package management

    microsoft/vscode-python-environments’s past year of commit activity
    TypeScript 80 MIT 36 165 (22 issues need help) 16 Updated Jan 12, 2026
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,527 MIT 330 1,000 (2 issues need help) 42 Updated Jan 12, 2026
  • GitHubCopilot_Customized Public template

    GitHub Universe 2025: GitHub Copilot, Customized

    microsoft/GitHubCopilot_Customized’s past year of commit activity
    TypeScript 31 10 3 2 Updated Jan 12, 2026
  • mcp Public

    Catalog of official Microsoft MCP (Model Context Protocol) server implementations for AI-powered data access and tool integration

    microsoft/mcp’s past year of commit activity
    C# 2,417 MIT 340 203 (26 issues need help) 57 Updated Jan 12, 2026
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