... an excellent example of idiomatic design. Most folks who port xUnit just transliterate the Smalltalk or Java version. That's what we did with NUnit at first, too. This new version is NUnit as it would have been done had it been done in C# to begin with. Kent Beck

What Is NUnit?

NUnit is a unit-testing framework for all .Net languages. Initially ported from JUnit, the current production release, version 2.6, is the seventh major release of this xUnit based unit testing tool for Microsoft .NET. It is written entirely in C# and has been completely redesigned to take advantage of many .NET language features, for example custom attributes and other reflection related capabilities. NUnit brings xUnit to all .NET languages.

NUnit 3.0 is currently under development and is a complete rewrite of NUnit. With a new infrastructure and new features. An alpha release is currently available.

License

NUnit is Open Source software. NUnit 2.6.3 is released under the NUnit license while NUnit 3.0 uses the MIT license. Both of these licenses allow the use of NUnit in free and commercial applications and libraries without restrictions.

About Us

NUnit 2.6.3 was created by Charlie Poole, Jordan Terrell and Simone Busoli. The 3.0 release is being developed by Charlie Poole, Rob Prouse, Simone Busoli, with numerous contributions from the community.

Earlier versions of NUnit were developed by Charlie Poole, James W. Newkirk, Alexei A. Vorontsov, Michael C. Two and Philip A. Craig.

We would also like to thank the following people for their contributions and support: Jamie Cansdale, Cvetomir Todorov, Doug de la Torre, David White, Ethan Smith, Al Gonzalez, Ron Jeffries and Rob Jeffries. A special acknowledgment needs to be sent to Kent Beck and Erich Gamma because without their efforts none of this would have been possible.

Site design by Anne Lewis.

Donations

The NUnit team invests a great deal of time and effort to make NUnit a useful tool. In addition, we have expenses. We have to purchase domain names, arrange for web site hosting and acquire equipment.

Making a financial contribution is one way in which you can help us ensure that NUnit continues to develop and remains free and open software. For more information or to view a list of donors, see our Donations page.

Recent News

NUnit 3.0 Alpha Released
This is the long awaited first release of NUnit 3.0. It includes the framework itself, the new NUnit test engine and the nunit-console runner. While still alpha level, it is functional and recommended for use in select projects for testing.

You may download NUnit 3.0 Alpha from Github. See the release notes for more information.

NUnit Visual Studio Test Adapter 1.2 Released
This is a bug fix update, supporting all updates of VS 2012 and VS 2013 as of September 2014.

You may download it from Github project site, or from the Visual Studio Gallery, or as a NuGet package
See the release notes for more information.

NUnit 2.6.3 Released
This fixes several bugs in NUnit 2.6.2 and has additional suppport for async methods. See the release notes for details of changes or Download it...

NUnitLite 1.0 Released
This is the first production release of the NUnitLite test framework. It incorporates most features from NUnit and provides builds for use with .NET 1.1, 2.0, 3.5, 4.0 and 4.5, Compact Framework 2.0 and 3.5 and Silverlight 3.0, 4.0 and 5.0.

You may download NUnitLite from our Launchpad project site or as a NUget package. See the release notes for more information.