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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 36.7k

  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# 126k 7.5k

  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# 26.8k 4.4k

Repositories

Showing 10 of 7436 repositories
  • WindowsAppSDK-Samples Public

    Feature samples for the Windows App SDK

    microsoft/WindowsAppSDK-Samples’s past year of commit activity
    C++ 906 MIT 309 53 29 Updated Dec 10, 2025
  • WSL Public

    Windows Subsystem for Linux

    microsoft/WSL’s past year of commit activity
    C++ 30,528 MIT 1,542 954 24 Updated Dec 10, 2025
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx’s past year of commit activity
    C# 964 MIT 289 225 33 Updated Dec 10, 2025
  • powercat Public

    Resources from Power CAT

    microsoft/powercat’s past year of commit activity
    JavaScript 20 MIT 7 2 0 Updated Dec 10, 2025
  • typescript-go Public

    Staging repo for development of native port of TypeScript

    microsoft/typescript-go’s past year of commit activity
    Go 23,257 Apache-2.0 760 186 (1 issue needs help) 49 Updated Dec 10, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,487 MIT 36,738 5,000+ (562 issues need help) 947 Updated Dec 10, 2025
  • 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# 2,280 MIT 316 232 (48 issues need help) 48 Updated Dec 10, 2025
  • node-api-dotnet Public

    Advanced interoperability between .NET and JavaScript in the same process.

    microsoft/node-api-dotnet’s past year of commit activity
    C# 700 MIT 74 55 5 Updated Dec 10, 2025
  • codeql Public Forked from github/codeql

    CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security

    microsoft/codeql’s past year of commit activity
    C# 19 MIT 2,117 14 15 Updated Dec 10, 2025
  • chartifact Public

    Declarative, interactive data documents

    microsoft/chartifact’s past year of commit activity
    TypeScript 52 MIT 18 0 11 Updated Dec 10, 2025
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