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Open source projects and samples from Microsoft

Open Source at Microsoft

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Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

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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 177k 35.3k

  2. TypeScript TypeScript Public

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

    TypeScript 106k 13k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 124k 7.4k

  4. terminal terminal Public

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

    C++ 100k 8.8k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.3k 4.3k

Repositories

Showing 10 of 7168 repositories
  • RD-Agent Public

    Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report

    microsoft/RD-Agent’s past year of commit activity
    Python 8,024 MIT 845 56 57 Updated Oct 2, 2025
  • azure-devops-extension-api Public

    REST client libraries and contracts for Azure DevOps web extension developers.

    microsoft/azure-devops-extension-api’s past year of commit activity
    TypeScript 116 MIT 48 84 8 Updated Oct 2, 2025
  • roosterjs Public

    roosterjs is a framework-independent javascript rich text editor.

    microsoft/roosterjs’s past year of commit activity
    TypeScript 1,282 176 48 6 Updated Oct 2, 2025
  • agent-framework Public

    A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

    microsoft/agent-framework’s past year of commit activity
    Python 477 MIT 50 212 27 Updated Oct 2, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,758 MIT 5,451 1,000 428 Updated Oct 2, 2025
  • azure-pipelines-tasks Public

    Tasks for Azure Pipelines

    microsoft/azure-pipelines-tasks’s past year of commit activity
    TypeScript 3,575 MIT 2,662 291 (26 issues need help) 196 Updated Oct 2, 2025
  • mstic Public

    Microsoft Threat Intelligence

    microsoft/mstic’s past year of commit activity
    Python 193 CC-BY-4.0 35 2 0 Updated Oct 2, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 17,990 MIT 3,482 846 318 Updated Oct 2, 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.

    microsoft/garnet’s past year of commit activity
    C# 11,505 MIT 607 21 (12 issues need help) 25 Updated Oct 2, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 177,153 MIT 35,299 5,000+ (440 issues need help) 761 Updated Oct 2, 2025