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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 39.1k

  2. TypeScript TypeScript Public

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

    TypeScript 108k 13.3k

  3. PowerToys PowerToys Public

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

    C# 131k 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 4.5k

Repositories

Showing 10 of 7751 repositories
  • DiskANN Public

    Graph-structured Indices for Scalable, Fast, Fresh and Filtered Approximate Nearest Neighbor Search

    microsoft/DiskANN’s past year of commit activity
    Rust 1,743 MIT 397 132 (3 issues need help) 72 Updated Apr 9, 2026
  • webui Public

    WebUI is a language-agnostic server-side rendering framework that compiles HTML templates into a binary protocol at build time and uses Web Components Islands Architecture for client-side interactivity. There is no JavaScript runtime on the server - rendering is Rust-native, sub-millisecond, and available from any backend language.

    microsoft/webui’s past year of commit activity
    Rust 7 MIT 0 8 (1 issue needs help) 0 Updated Apr 9, 2026
  • lisa Public

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

    microsoft/lisa’s past year of commit activity
    Python 325 MIT 232 36 (3 issues need help) 20 Updated Apr 9, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 183,592 MIT 39,052 5,000+ (508 issues need help) 1,606 Updated Apr 9, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,438 MIT 6,602 1,150 420 Updated Apr 9, 2026
  • eval-guide Public

    A plugin for AI agent evaluation. Plan evals, generate test cases, interpret results for Copilot Studio agents. Grounded in Microsoft's Eval Scenario Library & Triage Playbook.

    microsoft/eval-guide’s past year of commit activity
    HTML 0 MIT 0 0 0 Updated Apr 9, 2026
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,662 MIT 352 1,038 (2 issues need help) 87 Updated Apr 9, 2026
  • powerplatform-build-tools Public

    Power Platform Build Tools automate common build and deployment tasks related to Power Platform. This includes synchronization of solution metadata (a.k.a. solutions) between development environments and source control, generating build artifacts, deploying to downstream environments, provisioning/de-provisioning of environments, and the ability…

    microsoft/powerplatform-build-tools’s past year of commit activity
    TypeScript 271 MIT 63 153 15 Updated Apr 9, 2026
  • 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 2,287 MIT 289 19 20 Updated Apr 9, 2026
  • PowerPlatform-DataverseClient-Python Public
    microsoft/PowerPlatform-DataverseClient-Python’s past year of commit activity
    Python 40 MIT 14 7 17 Updated Apr 9, 2026
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