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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 170k 31.7k

  2. TypeScript TypeScript Public

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

    TypeScript 104k 12.8k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 118k 6.9k

  4. terminal terminal Public

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

    C++ 97.8k 8.5k

  5. semantic-kernel semantic-kernel Public

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

    C# 24.1k 3.7k

Repositories

Showing 10 of 6762 repositories
  • vscode-loc Public

    VS Code Localization Extension

    microsoft/vscode-loc’s past year of commit activity
    611 328 38 4 Updated Apr 22, 2025
  • AI_Agents_Hackathon Public

    A free virtual hackathon for building AI agents with Microsoft and Azure.

    microsoft/AI_Agents_Hackathon’s past year of commit activity
    194 MIT 59 22 0 Updated Apr 22, 2025
  • teams-ai Public

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

    microsoft/teams-ai’s past year of commit activity
    C# 523 MIT 216 117 (1 issue needs help) 6 Updated Apr 22, 2025
  • Olive Public

    Olive: Simplify ML Model Finetuning, Conversion, Quantization, and Optimization for CPUs, GPUs and NPUs.

    microsoft/Olive’s past year of commit activity
    Python 1,862 MIT 201 55 11 Updated Apr 22, 2025
  • 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 71,889 Apache-2.0 4,081 771 17 Updated Apr 22, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 16,326 MIT 3,164 2,635 565 Updated Apr 22, 2025
  • opensource.microsoft.com Public

    This is the source code to the Microsoft Open Source site featuring projects, program information, and "get involved" pages. This site is published at opensource.microsoft.com and managed by the Microsoft Open Source Programs Office (OSPO).

    microsoft/opensource.microsoft.com’s past year of commit activity
    TypeScript 896 MIT 417 0 0 Updated Apr 22, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,272 MIT 4,991 902 290 Updated Apr 22, 2025
  • vscode-mssql Public

    Visual Studio Code SQL Server extension.

    microsoft/vscode-mssql’s past year of commit activity
    TypeScript 1,651 475 340 4 Updated Apr 22, 2025
  • playwright-mcp Public

    Playwright MCP server

    microsoft/playwright-mcp’s past year of commit activity
    TypeScript 8,608 Apache-2.0 457 24 8 Updated Apr 22, 2025
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