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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 195k 44.4k

  2. TypeScript TypeScript Public

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

    Go 112k 15.4k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C 141k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.7k 4.9k

Repositories

Showing 10 of 8443 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,296 MIT 12,145 1,335 5,000+ Updated Nov 8, 2026
  • mcs-labs Public
    microsoft/mcs-labs's past year of commit activity
    JavaScript 152 MIT 105 20 12 Updated Nov 8, 2026
  • nvx Public

    Cross-Platform Micro-VM Sandbox for Agentic Workloads

    microsoft/nvx's past year of commit activity
    Rust 830 MIT 55 192 10 Updated Nov 8, 2026
  • MIDI Public

    Windows MIDI Services

    microsoft/MIDI's past year of commit activity
    C++ 729 MIT 81 50 (1 issue needs help) 0 Updated Nov 8, 2026
  • vscode-docs Public

    Public documentation for Visual Studio Code

    microsoft/vscode-docs's past year of commit activity
    Markdown 6,687 5,810 71 13 Updated Nov 8, 2026
  • TokenEconomizer Public

    Experience-Driven Black-Box Cost Control for Coding Agents

    microsoft/TokenEconomizer's past year of commit activity
    Python 5,211 Apache-2.0 318 5 3 Updated Nov 8, 2026
  • amplifier-unified Public

    Unified shell for the Amplifier project

    microsoft/amplifier-unified's past year of commit activity
    Python 5 MIT 4 138 13 Updated Nov 8, 2026
  • vscode-telemetry-extractor Public

    Allows the extraction of telemetry events from the VS Code source code

    microsoft/vscode-telemetry-extractor's past year of commit activity
    TypeScript 11 MIT 19 0 3 Updated Nov 8, 2026
  • microsoft-ui-reactor Public

    Reactor is an experimental set of extensions to WinUI

    microsoft/microsoft-ui-reactor's past year of commit activity
    C# 843 MIT 63 76 10 Updated Nov 8, 2026
  • openvmm Public

    Home of OpenVMM and OpenHCL

    microsoft/openvmm's past year of commit activity
    Rust 1,961 MIT 269 189 (6 issues need help) 182 Updated Nov 8, 2026