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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 7782 repositories
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    microsoft/onnxruntime-genai’s past year of commit activity
    C++ 1,013 MIT 284 132 32 Updated Apr 21, 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 19,940 2,879 397 (5 issues need help) 289 Updated Apr 21, 2026
  • EventLogExpert Public
    microsoft/EventLogExpert’s past year of commit activity
    C# 266 MIT 31 1 0 Updated Apr 21, 2026
  • aspire Public

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

    microsoft/aspire’s past year of commit activity
    C# 5,840 MIT 867 1,732 (4 issues need help) 144 Updated Apr 21, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 184,086 MIT 39,304 5,000+ (501 issues need help) 1,772 Updated Apr 21, 2026
  • OHCL-Linux-Kernel Public

    OpenHCL Linux Kernel

    microsoft/OHCL-Linux-Kernel’s past year of commit activity
    C 21 21 6 11 Updated Apr 21, 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 129 107 179 11 Updated Apr 21, 2026
  • binskim Public

    A binary static analysis tool that provides security and correctness results for Windows Portable Executable and *nix ELF binary formats

    microsoft/binskim’s past year of commit activity
    C# 848 169 139 21 Updated Apr 21, 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 86,949 Apache-2.0 5,548 604 24 Updated Apr 21, 2026
  • azure-pipelines-extensions Public

    Collection of all RM and deployment extensions

    microsoft/azure-pipelines-extensions’s past year of commit activity
    PowerShell 306 MIT 427 146 (7 issues need help) 49 Updated Apr 21, 2026
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