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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 44.7k

  2. TypeScript TypeScript Public

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

    Go 111k 16.1k

  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 9.7k

  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 8352 repositories
  • vscode-documentdb Public

    DocumentDB Extension for VS Code

    microsoft/vscode-documentdb's past year of commit activity
    TypeScript 33 MIT 22 140 9 Updated Oct 9, 2026
  • fluentui-blazor Public

    Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications

    microsoft/fluentui-blazor's past year of commit activity
    C# 4,844 MIT 486 18 10 Updated Oct 9, 2026
  • oxidizer Public

    Oxidizer is a platform for Rust service development which bridges the gaps in the crate ecosystem to deliver a turn-key solution to enable the efficient creation of high-scale high-availability and high-performance services in Rust.

    microsoft/oxidizer's past year of commit activity
    Rust 178 MIT 30 2 33 Updated Oct 9, 2026
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx's past year of commit activity
    C# 1,047 MIT 314 52 8 Updated Oct 9, 2026
  • identity-spiffe Public

    Sidecar-enforced agent-to-agent authorization with Microsoft Entra Agent Identity, SPIFFE/SPIRE, and cross-cloud workload federation.

    microsoft/identity-spiffe's past year of commit activity
    Python 11 MIT 5 10 3 Updated Oct 9, 2026
  • kafka-sink-ms-fabric Public

    A kafka sink using Kafka connect to Microsoft Fabric

    microsoft/kafka-sink-ms-fabric's past year of commit activity
    Java 3 MIT 2 0 14 Updated Oct 9, 2026
  • vscode-loc Public

    VS Code Localization Extension

    microsoft/vscode-loc's past year of commit activity
    758 400 81 48 Updated Oct 9, 2026
  • flint-chart Public

    🪄 Flint is a visualization language that lets AI agents reliably create expressive, good-looking charts from simple, human-editable chart specs.

    microsoft/flint-chart's past year of commit activity
    TypeScript 4,357 MIT 246 15 17 Updated Oct 9, 2026
  • simplechat Public

    Secure AI conversations with documents, video, audio, and more. Personal workspaces for focused context, group spaces for shared insight. Classify docs, reuse prompts, and extend with modular features.

    microsoft/simplechat's past year of commit activity
    Python 155 116 315 8 Updated Oct 9, 2026
  • coyote Public

    Coyote is a library and tool for testing concurrent C# code and deterministically reproducing bugs.

    microsoft/coyote's past year of commit activity
    C# 1,600 94 34 11 Updated Oct 9, 2026
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