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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 31.6k

  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# 117k 6.9k

  4. terminal Public

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

    C++ 97.7k 8.5k

  5. semantic-kernel Public

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

    C# 24k 3.7k

Repositories

Showing 10 of 6758 repositories
  • Olive Public

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

    Python 1,860 MIT 201 55 12 Updated Apr 18, 2025
  • BotFramework-DirectLineJS Public

    JavaScript client library for Microsoft Bot Framework's Direct Line protocol

    TypeScript 197 MIT 129 71 (1 issue needs help) 12 Updated Apr 18, 2025
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    C 4,273 MIT 558 178 (14 issues need help) 50 Updated Apr 18, 2025
  • Agents-for-js Public

    This repository is for active development of the Microsoft 365 Agent SDK components for JavaScript

    TypeScript 20 MIT 5 44 (1 issue needs help) 3 Updated Apr 18, 2025
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    C++ 691 MIT 172 98 29 Updated Apr 18, 2025
  • MLOS Public

    MLOS is a project to enable autotuning for systems.

    Python 153 MIT 71 94 (3 issues need help) 14 Updated Apr 18, 2025
  • garnet Public

    Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

    C# 10,972 MIT 567 16 (11 issues need help) 14 Updated Apr 18, 2025
  • pxt Public

    Microsoft MakeCode (PXT - Programming eXperience Toolkit)

    TypeScript 2,147 MIT 596 197 (2 issues need help) 52 Updated Apr 18, 2025
  • vscode Public

    Visual Studio Code

    TypeScript 170,124 MIT 31,607 5,000+ (402 issues need help) 534 Updated Apr 18, 2025
  • vscode-loc Public

    VS Code Localization Extension

    611 327 36 3 Updated Apr 18, 2025
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