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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 168k 30.6k

  2. TypeScript TypeScript Public

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

    TypeScript 102k 12.7k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 115k 6.8k

  4. terminal terminal Public

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

    C++ 97.1k 8.5k

  5. semantic-kernel semantic-kernel Public

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

    C# 23.2k 3.5k

Repositories

Showing 10 of 6669 repositories
  • 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 4,194 MIT 551 172 (15 issues need help) 44 Updated Feb 21, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 167,593 MIT 30,641 5,000+ (388 issues need help) 500 Updated Feb 21, 2025
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    microsoft/onnxruntime-genai’s past year of commit activity
    C++ 620 MIT 154 80 30 Updated Feb 21, 2025
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps’s past year of commit activity
    AL 371 MIT 180 17 39 Updated Feb 21, 2025
  • documentdb Public

    DocumentDB offers a native implementation of document-oriented NoSQL database, enabling seamless CRUD operations on BSON data types within a PostgreSQL framework. Powering vCore-based Azure Cosmos DB for MongoDB.

    microsoft/documentdb’s past year of commit activity
    C 1,400 MIT 60 24 (1 issue needs help) 5 Updated Feb 21, 2025
  • tfs-cli Public

    Cross-platform CLI for Microsoft Team Foundation Server and Visual Studio Team Services

    microsoft/tfs-cli’s past year of commit activity
    TypeScript 373 MIT 135 113 31 Updated Feb 21, 2025
  • Qcodes Public

    Modular data acquisition framework

    microsoft/Qcodes’s past year of commit activity
    Python 357 MIT 322 180 45 Updated Feb 21, 2025
  • 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++ 3,928 MIT 344 454 23 Updated Feb 21, 2025
  • mssql-jdbc Public

    The Microsoft JDBC Driver for SQL Server is a Type 4 JDBC driver that provides database connectivity with SQL Server through the standard JDBC application program interfaces (APIs).

    microsoft/mssql-jdbc’s past year of commit activity
    Java 1,073 MIT 433 86 18 Updated Feb 21, 2025
  • TypeScript-DOM-lib-generator Public

    Tool for generating dom related TypeScript and JavaScript library files

    microsoft/TypeScript-DOM-lib-generator’s past year of commit activity
    TypeScript 633 Apache-2.0 431 161 39 Updated Feb 21, 2025
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