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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 182k 38.1k

  2. TypeScript TypeScript Public

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

    TypeScript 108k 13.2k

  3. PowerToys PowerToys Public

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

    C# 130k 7.7k

  4. terminal terminal Public

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

    C++ 102k 9.1k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.3k 4.5k

Repositories

Showing 10 of 7579 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,257 MIT 6,133 1,105 219 Updated Feb 21, 2026
  • litebox Public

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

    microsoft/litebox’s past year of commit activity
    Rust 2,306 MIT 92 68 20 Updated Feb 21, 2026
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps’s past year of commit activity
    AL 540 MIT 333 75 67 Updated Feb 21, 2026
  • CoR Public
    microsoft/CoR’s past year of commit activity
    Python 14 MIT 3 0 14 Updated Feb 21, 2026
  • kiota-typescript Public

    TypeScript libraries for Kiota-generated API clients.

    microsoft/kiota-typescript’s past year of commit activity
    TypeScript 57 MIT 35 8 (1 issue needs help) 3 Updated Feb 21, 2026
  • typescript-go Public

    Staging repo for development of native port of TypeScript

    microsoft/typescript-go’s past year of commit activity
    Go 24,177 Apache-2.0 833 218 (1 issue needs help) 72 Updated Feb 21, 2026
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    microsoft/msquic’s past year of commit activity
    C 4,629 MIT 651 214 (26 issues need help) 74 Updated Feb 21, 2026
  • python-environment-tools Public
    microsoft/python-environment-tools’s past year of commit activity
    Rust 199 MIT 36 4 (1 issue needs help) 0 Updated Feb 21, 2026
  • usersim Public
    microsoft/usersim’s past year of commit activity
    C++ 99 MIT 33 30 3 Updated Feb 21, 2026
  • Alphahunt Public

    Training threat hunting agents through scalable realistic synthetic data

    microsoft/Alphahunt’s past year of commit activity
    Python 5 MIT 3 0 25 Updated Feb 21, 2026
View all repositories

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