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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 Public

    Visual Studio Code

    TypeScript 169k 31.1k

  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# 116k 6.9k

  4. terminal Public

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

    C++ 97.4k 8.5k

  5. semantic-kernel Public

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

    C# 23.6k 3.6k

Repositories

Showing 10 of 6710 repositories
  • onnxruntime Public

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

    C++ 16,050 MIT 3,105 2,588 560 Updated Mar 21, 2025
  • vscode-java-debug Public

    Java Debugger for Visual Studio Code.

    TypeScript 543 352 207 (1 issue needs help) 6 Updated Mar 21, 2025
  • genaiscript Public

    Automatable GenAI Scripting

    TypeScript 2,379 MIT 162 82 (2 issues need help) 4 Updated Mar 21, 2025
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    C# 848 MIT 268 218 21 Updated Mar 21, 2025
  • synapse-spark-runtime Public

    Release notes for Apache Spark based Runtime for Azure Synapse Analytics and Microsoft Fabric

    20 MIT 4 5 0 Updated Mar 21, 2025
  • AI_Agents_Hackathon Public

    A free virtual hackathon for building AI agents with Microsoft and Azure.

    18 MIT 3 0 0 Updated Mar 21, 2025
  • windows-drivers-rs Public

    Platform that enables Windows driver development in Rust. Developed by Surface.

    Rust 1,585 Apache-2.0 76 40 (4 issues need help) 18 Updated Mar 21, 2025
  • vscode-java-pack Public

    VS Code extensions for Java developers.

    TypeScript 302 136 258 (1 issue needs help) 9 Updated Mar 21, 2025
  • finops-toolkit Public

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

    PowerShell 355 MIT 127 195 (33 issues need help) 26 Updated Mar 21, 2025
  • typespec Public
    Java 4,843 MIT 256 793 (2 issues need help) 48 Updated Mar 21, 2025