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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 194k 45.8k

  2. TypeScript TypeScript Public

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

    Go 112k 17.1k

  3. PowerToys PowerToys Public

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

    C 139k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.7k 4.8k

Repositories

Showing 10 of 8378 repositories
  • amplifier-unified Public

    Unified shell for the Amplifier project

    microsoft/amplifier-unified's past year of commit activity
    Python 3 MIT 1 13 6 Updated Oct 19, 2026
  • finops-toolkit Public

    Tools and resources to help you adopt and implement FinOps capabilities that automate and extend the Microsoft Cloud.

    microsoft/finops-toolkit's past year of commit activity
    PowerShell 614 MIT 260 254 (27 issues need help) 53 Updated Oct 19, 2026
  • sql-apps Public

    SQL Apps gives you a working application foundation and guides for creating your own screens, data and workflows with the AI assistant of your choice. You can start with an idea rather than a framework choice.

    microsoft/sql-apps's past year of commit activity
    JavaScript 1 MIT 2 0 0 Updated Oct 19, 2026
  • onnxruntime-genai Public

    Generative AI with ONNX Runtime

    microsoft/onnxruntime-genai's past year of commit activity
    C++ 1,138 MIT 370 158 121 Updated Oct 19, 2026
  • wassette Public

    Wassette: A security-oriented runtime that runs WebAssembly Components via MCP

    microsoft/wassette's past year of commit activity
    Rust 965 MIT 75 23 (1 issue needs help) 34 Updated Oct 19, 2026
  • aspire Public

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

    microsoft/aspire's past year of commit activity
    C# 6,372 MIT 1,016 2,383 (2 issues need help) 286 Updated Oct 19, 2026
  • SPTAG Public

    A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

    microsoft/SPTAG's past year of commit activity
    C++ 5,020 MIT 623 119 (1 issue needs help) 23 Updated Oct 19, 2026
  • lisa Public

    LISA is developed and maintained by Microsoft, to empower Linux validation.

    microsoft/lisa's past year of commit activity
    Python 336 MIT 254 41 (3 issues need help) 17 Updated Oct 19, 2026
  • pai Public

    Resource scheduling and cluster management for AI

    microsoft/pai's past year of commit activity
    JavaScript 2,700 MIT 553 248 19 Updated Oct 19, 2026
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat's past year of commit activity
    HTML 1,784 MIT 1,600 465 48 Updated Oct 19, 2026
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