# About xUnit.net [](https://dotnetfoundation.org/projects/project-detail/xunit) xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework. Written by the original inventor of NUnit v2, xUnit.net is the latest technology for unit testing C# and F# (other .NET languages may work as well, but are unsupported). xUnit.net works with Visual Studio, Visual Studio Code, ReSharper, CodeRush, and TestDriven.NET. It is part of the [.NET Foundation](https://www.dotnetfoundation.org/), and operates under their [code of conduct](https://www.dotnetfoundation.org/code-of-conduct). It is licensed under [Apache 2](https://opensource.org/licenses/Apache-2.0) (an OSI approved license). For project documentation, please visit the [xUnit.net project home](https://xunit.net/). * _New to xUnit.net? Get started with [.NET Framework](https://xunit.net/docs/getting-started/netfx/visual-studio) and [.NET Core](https://xunit.net/docs/getting-started/netcore/cmdline)._ * _Need some help building the source? See [BUILDING.md](https://github.com/xunit/xunit/tree/v2/BUILDING.md)._ * _Want to contribute to the project? See [CONTRIBUTING.md](https://github.com/xunit/.github/tree/main/CONTRIBUTING.md)._ * _Want to contribute to the assertion library? See the [suggested contribution workflow](https://github.com/xunit/assert.xunit/tree/main/README.md#suggested-contribution-workflow) in the assertion library project, as it is slightly more complex due to code being spread across two GitHub repositories._ [![Powered by NDepend](https://raw.github.com/xunit/media/main/powered-by-ndepend-transparent.png)](http://www.ndepend.com/) ## Latest Builds | | Stable | Latest CI ([how to use](/docs/using-ci-builds)) | Build status | ------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | v3 core framework | [![](https://img.shields.io/nuget/v/xunit.v3.svg?logo=nuget)](https://www.nuget.org/packages/xunit.v3) | [![](https://img.shields.io/badge/endpoint.svg?url=https://f.feedz.io/xunit/xunit/shield/xunit.v3/latest&color=f58142)](https://feedz.io/org/xunit/repository/xunit/packages/xunit.v3) | [![](https://img.shields.io/endpoint.svg?url=https://actions-badge.atrox.dev/xunit/xunit/badge%3Fref%3Dmain&label=build)](https://actions-badge.atrox.dev/xunit/xunit/goto?ref=main) | v2 core framework | [![](https://img.shields.io/nuget/v/xunit.svg?logo=nuget)](https://www.nuget.org/packages/xunit) | [![](https://img.shields.io/badge/endpoint.svg?url=https://f.feedz.io/xunit/xunit/shield/xunit/latest&color=f58142)](https://feedz.io/org/xunit/repository/xunit/packages/xunit) | [![](https://img.shields.io/endpoint.svg?url=https://actions-badge.atrox.dev/xunit/xunit/badge%3Fref%3Dv2&label=build)](https://actions-badge.atrox.dev/xunit/xunit/goto?ref=v2) | xunit.analyzers | [![](https://img.shields.io/nuget/v/xunit.analyzers.svg?logo=nuget)](https://www.nuget.org/packages/xunit.analyzers) | [![](https://img.shields.io/badge/endpoint.svg?url=https://f.feedz.io/xunit/xunit/shield/xunit.analyzers/latest&color=f58142)](https://feedz.io/org/xunit/repository/xunit/packages/xunit.analyzers) | [![](https://img.shields.io/endpoint.svg?url=https://actions-badge.atrox.dev/xunit/xunit.analyzers/badge%3Fref%3Dmain&label=build)](https://actions-badge.atrox.dev/xunit/xunit.analyzers/goto?ref=main) | xunit.runner.visualstudio | [![](https://img.shields.io/nuget/v/xunit.runner.visualstudio.svg?logo=nuget)](https://www.nuget.org/packages/xunit.runner.visualstudio) | [![](https://img.shields.io/badge/endpoint.svg?url=https://f.feedz.io/xunit/xunit/shield/xunit.runner.visualstudio/latest&color=f58142)](https://feedz.io/org/xunit/repository/xunit/packages/xunit.runner.visualstudio) | [![](https://img.shields.io/endpoint.svg?url=https://actions-badge.atrox.dev/xunit/visualstudio.xunit/badge%3Fref%3Dmain&label=build)](https://actions-badge.atrox.dev/xunit/visualstudio.xunit/goto?ref=main) *For complete CI package lists, please visit the [feedz.io package search](https://feedz.io/org/xunit/repository/xunit/search). A free login is required.*