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Open source projects and samples from Microsoft
README.md

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 Public

    Visual Studio Code

    TypeScript 170k 31.8k

  2. TypeScript Public

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

    TypeScript 104k 12.8k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 118k 7k

  4. terminal Public

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

    C++ 97.9k 8.5k

  5. semantic-kernel Public

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

    C# 24.2k 3.8k

Repositories

Showing 10 of 6780 repositories
  • PowerToys Public

    Windows system utilities to maximize productivity

    C# 117,806 MIT 6,963 5,000+ (194 issues need help) 64 Updated Apr 27, 2025
  • finops-toolkit Public

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

    PowerShell 374 MIT 135 191 (32 issues need help) 25 Updated Apr 27, 2025
  • vsts-extension-retrospectives Public

    An Azure DevOps extension for efficient retrospectives

    TypeScript 192 MIT 84 214 (3 issues need help) 10 Updated Apr 27, 2025
  • pyright Public

    Static Type Checker for Python

    Python 14,212 1,651 21 0 Updated Apr 27, 2025
  • LightGBM Public

    A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.

    C++ 17,159 MIT 3,875 387 (10 issues need help) 44 Updated Apr 27, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    PowerShell 9,287 MIT 5,000 899 135 Updated Apr 27, 2025
  • CoseSignTool Public

    CoseSignTool is a platform-agnostic command line application to COSE sign files and validate COSE signatures. CoseHandler is a library of functions for COSE signing and validation for use by .NET applications.

    C# 45 MIT 17 4 6 Updated Apr 27, 2025
  • TypeAgent Public

    Sample code that explores an architecture for using TypeChat to build a personal agent that can work with application agents.

    TypeScript 150 MIT 35 0 0 Updated Apr 27, 2025
  • DurableFunctionsMonitor Public

    A monitoring/debugging UI tool for Azure Durable Functions

    TypeScript 245 MIT 36 26 11 Updated Apr 27, 2025
  • verified-storage Public

    Storage systems with verified correctness properties

    Rust 44 MIT 15 0 1 Updated Apr 27, 2025
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