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Open Source at Microsoft

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Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

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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 Public

    Visual Studio Code

    TypeScript 174k 33.5k

  2. TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 120k 7.1k

  4. terminal Public

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

    C++ 98.8k 8.6k

  5. semantic-kernel Public

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

    C# 25.3k 4k

Repositories

Showing 10 of 6949 repositories
  • openvmm Public

    Home of OpenVMM and OpenHCL.

    Rust 1,717 MIT 131 151 (7 issues need help) 70 Updated Jul 3, 2025
  • onnxruntime Public

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

    C++ 17,085 MIT 3,315 2,013 275 Updated Jul 3, 2025
  • vscode-jupyter Public

    VS Code Jupyter extension

    TypeScript 1,383 MIT 330 197 (5 issues need help) 25 Updated Jul 3, 2025
  • vscode Public

    Visual Studio Code

    TypeScript 174,154 MIT 33,464 5,000+ (433 issues need help) 680 Updated Jul 3, 2025
  • magentic-ui Public

    A research prototype of a human-centered web agent

    Python 5,982 MIT 611 60 14 Updated Jul 3, 2025
  • terraform-provider-fabric Public

    Terraform Provider for Microsoft Fabric

    Go 71 MPL-2.0 14 38 10 Updated Jul 3, 2025
  • FluidFramework Public

    Library for building distributed, real-time collaborative web applications

    TypeScript 4,833 MIT 552 20 76 Updated Jul 3, 2025
  • wslg Public

    Enabling the Windows Subsystem for Linux to include support for Wayland and X server related scenarios

    C++ 11,020 MIT 358 611 4 Updated Jul 3, 2025
  • fhir-server Public

    A service that implements the FHIR standard

    TSQL 1,270 MIT 539 85 (2 issues need help) 52 Updated Jul 3, 2025
  • mcp-gateway Public

    MCP Gateway is a reverse proxy and management layer for MCP servers, enabling scalable, session-aware routing and lifecycle management of MCP servers in Kubernetes environments.

    C# 36 MIT 8 0 0 Updated Jul 3, 2025