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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 193k 42.9k

  2. TypeScript TypeScript Public

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

    Go 111k 14.5k

  3. PowerToys PowerToys Public

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

    C 139k 8.6k

  4. terminal terminal Public

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

    C++ 105k 9.6k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.6k 4.8k

Repositories

Showing 10 of 8299 repositories
  • TypeScript Public

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

    microsoft/TypeScript's past year of commit activity
    Go 111,146 Apache-2.0 14,531 4,858 (785 issues need help) 147 Updated Sep 22, 2026
  • 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# 12,023 MIT 703 32 (11 issues need help) 34 Updated Sep 22, 2026
  • WSL Public

    Windows Subsystem for Linux

    microsoft/WSL's past year of commit activity
    C++ 33,749 MIT 1,830 933 56 Updated Sep 22, 2026
  • winappCli Public

    winapp, the Windows App Development CLI, is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

    microsoft/winappCli's past year of commit activity
    C# 1,265 MIT 80 67 12 Updated Sep 22, 2026
  • nvx Public

    Cross-Platform Micro-VM Sandbox for Agentic Workloads

    microsoft/nvx's past year of commit activity
    Python 6 MIT 2 10 (1 issue needs help) 9 Updated Sep 22, 2026
  • mxc Public

    Policy-driven, layered isolation and containment

    microsoft/mxc's past year of commit activity
    Rust 1,352 MIT 80 49 23 Updated Sep 22, 2026
  • qdk-ec Public
    microsoft/qdk-ec's past year of commit activity
    Rust 64 MIT 16 15 14 Updated Sep 22, 2026
  • litebox Public

    A security-focused library OS supporting kernel- and user-mode execution

    microsoft/litebox's past year of commit activity
    Rust 2,692 MIT 144 123 31 Updated Sep 22, 2026
  • mimalloc Public

    mimalloc is a compact general purpose allocator with excellent performance.

    microsoft/mimalloc's past year of commit activity
    C 13,385 MIT 1,184 259 38 Updated Sep 22, 2026
  • WindowsAppSDK Public

    The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

    microsoft/WindowsAppSDK's past year of commit activity
    C++ 4,689 MIT 472 360 (12 issues need help) 62 Updated Sep 22, 2026
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