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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 177k 34.9k

  2. TypeScript TypeScript Public

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

    TypeScript 106k 13k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 123k 7.3k

  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# 26.1k 4.2k

Repositories

Showing 10 of 7079 repositories
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 17,831 MIT 3,445 836 311 Updated Sep 11, 2025
  • Agents-for-python Public

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

    microsoft/Agents-for-python’s past year of commit activity
    Python 70 MIT 34 20 1 Updated Sep 11, 2025
  • AzureStack_Network_Switch_Config_Generator Public
    microsoft/AzureStack_Network_Switch_Config_Generator’s past year of commit activity
    Python 3 MIT 2 0 1 Updated Sep 11, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,701 MIT 5,397 1,050 229 Updated Sep 11, 2025
  • kata-containers Public Forked from kata-containers/kata-containers

    Kata Containers is an open source project and community working to build a standard implementation of lightweight Virtual Machines (VMs) that feel and perform like containers, but provide the workload isolation and security advantages of VMs. https://katacontainers.io/

    microsoft/kata-containers’s past year of commit activity
    Rust 67 Apache-2.0 1,288 0 20 Updated Sep 11, 2025
  • qsharp Public

    Azure Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qsharp’s past year of commit activity
    Rust 766 MIT 139 155 (1 issue needs help) 5 Updated Sep 11, 2025
  • clarity Public

    A behavioral analytics library that uses dom mutations and user interactions to generate aggregated insights.

    microsoft/clarity’s past year of commit activity
    TypeScript 2,464 MIT 248 291 (1 issue needs help) 10 Updated Sep 11, 2025
  • vs-streamjsonrpc Public

    The StreamJsonRpc library offers JSON-RPC 2.0 over any .NET Stream, WebSocket, or Pipe. With bonus support for request cancellation, client proxy generation, and more.

    microsoft/vs-streamjsonrpc’s past year of commit activity
    C# 860 162 54 (1 issue needs help) 3 Updated Sep 11, 2025
  • VirtualClient Public

    Benchmarking and monitoring automation, designed for cloud, built with .NET.

    microsoft/VirtualClient’s past year of commit activity
    C# 105 MIT 57 0 13 Updated Sep 11, 2025
  • vs-mef Public

    Managed Extensibility Framework (MEF) implementation used by Visual Studio

    microsoft/vs-mef’s past year of commit activity
    C# 450 MIT 88 24 10 Updated Sep 11, 2025
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