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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 180k 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 7466 repositories
  • Visual-Studio-Administrative-Templates Public

    Contains the administrative template defining the Visual Studio functionality that can be centrally managed by group policy

    microsoft/Visual-Studio-Administrative-Templates’s past year of commit activity
    PowerShell 18 MIT 15 1 2 Updated Jan 8, 2026
  • azure-linux-image-tools Public
    microsoft/azure-linux-image-tools’s past year of commit activity
    Go 24 MIT 11 4 10 Updated Jan 8, 2026
  • WinAppCli Public

    The Windows App Development CLI is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

    microsoft/WinAppCli’s past year of commit activity
    C# 27 MIT 4 29 4 Updated Jan 8, 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# 2,399 MIT 338 202 (26 issues need help) 55 Updated Jan 8, 2026
  • mimalloc Public

    mimalloc is a compact general purpose allocator with excellent performance.

    microsoft/mimalloc’s past year of commit activity
    C 12,338 MIT 1,039 373 33 Updated Jan 8, 2026
  • debug-gym Public

    A Text-Based Environment for Interactive Debugging

    microsoft/debug-gym’s past year of commit activity
    Python 288 MIT 37 10 5 Updated Jan 8, 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 8, 2026
  • Agent365-dotnet Public
    microsoft/Agent365-dotnet’s past year of commit activity
    C# 12 MIT 8 3 9 Updated Jan 8, 2026
  • 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 6,406 MIT 1,000 531 93 Updated Jan 8, 2026
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 9,245 MIT 1,560 0 116 Updated Jan 8, 2026
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