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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 184k 39.3k

  2. TypeScript TypeScript Public

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

    TypeScript 109k 13.4k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C# 132k 7.9k

  4. terminal terminal Public

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

    C++ 103k 9.2k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.7k 4.6k

Repositories

Showing 10 of 7775 repositories
  • aspire Public

    Aspire is the tool for code-first, extensible, observable dev and deploy.

    microsoft/aspire’s past year of commit activity
    C# 5,834 MIT 865 1,719 (4 issues need help) 141 Updated Apr 18, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 183,992 MIT 39,265 5,000+ (501 issues need help) 1,733 Updated Apr 18, 2026
  • FluidFramework Public

    Library for building distributed, real-time collaborative web applications

    microsoft/FluidFramework’s past year of commit activity
    TypeScript 4,920 MIT 573 57 134 Updated Apr 18, 2026
  • playwright Public

    Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

    microsoft/playwright’s past year of commit activity
    TypeScript 86,763 Apache-2.0 5,527 602 16 Updated Apr 18, 2026
  • fluentui Public

    Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

    microsoft/fluentui’s past year of commit activity
    TypeScript 19,935 2,877 406 (5 issues need help) 279 Updated Apr 18, 2026
  • simplechat Public

    Secure AI conversations with documents, video, audio, and more. Personal workspaces for focused context, group spaces for shared insight. Classify docs, reuse prompts, and extend with modular features.

    microsoft/simplechat’s past year of commit activity
    Python 129 107 178 10 Updated Apr 18, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,492 MIT 6,728 1,145 308 Updated Apr 18, 2026
  • WinUI-Gallery Public

    This app demonstrates the controls available in WinUI and the Fluent Design System.

    microsoft/WinUI-Gallery’s past year of commit activity
    C# 3,448 MIT 721 36 (4 issues need help) 4 Updated Apr 18, 2026
  • SQL_LinuxDiag Public

    This utility is a set of Bash scripts designed to streamline the collection of diagnostic logs from SQL Server instances running on Linux. It simplifies troubleshooting by gathering essential system and SQL Server data, enabling faster resolution of technical incidents in collaboration with Microsoft support (CSS).

    microsoft/SQL_LinuxDiag’s past year of commit activity
    TSQL 0 MIT 1 0 0 Updated Apr 18, 2026
  • teams-sdk Public

    SDK focused on building AI based applications and extensions for Microsoft Teams and other Bot Framework channels

    microsoft/teams-sdk’s past year of commit activity
    TypeScript 684 MIT 263 100 13 Updated Apr 18, 2026
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