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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 179k 36.3k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 13.1k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 126k 7.5k

  4. terminal terminal Public

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

    C++ 101k 8.9k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.7k 4.4k

Repositories

Showing 10 of 7401 repositories
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,432 MIT 3,548 833 343 Updated Nov 21, 2025
  • MigTD Public Forked from intel/MigTD
    microsoft/MigTD’s past year of commit activity
    Rust 2 30 12 2 Updated Nov 21, 2025
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 8,998 MIT 1,429 0 104 Updated Nov 21, 2025
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 615 MIT 120 214 17 Updated Nov 21, 2025
  • ai-dev-gallery Public

    An open-source project for Windows developers to learn how to add AI with local models and APIs to Windows apps.

    microsoft/ai-dev-gallery’s past year of commit activity
    C# 1,281 MIT 174 60 (2 issues need help) 5 Updated Nov 21, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 178,781 MIT 36,314 5,000+ (480 issues need help) 863 Updated Nov 21, 2025
  • trident Public

    Azure Linux servicing agent - security focused install, provisioning, and update

    microsoft/trident’s past year of commit activity
    Rust 14 MIT 9 5 10 Updated Nov 21, 2025
  • mcp-dotnet-samples Public

    A comprehensive set of samples of creating and using MCP servers and clients with .NET

    microsoft/mcp-dotnet-samples’s past year of commit activity
    C# 129 MIT 40 4 4 Updated Nov 21, 2025
  • agent-lightning Public

    The absolute trainer to light up AI agents.

    microsoft/agent-lightning’s past year of commit activity
    Python 8,685 MIT 692 50 25 Updated Nov 21, 2025
  • SynapseML Public

    Simple and Distributed Machine Learning

    microsoft/SynapseML’s past year of commit activity
    Scala 5,178 MIT 854 353 (10 issues need help) 59 Updated Nov 21, 2025
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