NUnit 4 Framework: all versions and old releases

A unit-testing framework for all .NET languages. It can be used for a wide range of testing, from unit testing with TDD to full fledged system and integration testing.

NUnit Languages & SDKs #75 Languages & SDKs

LicenceOpen source
Version4.6.1
RequiresWindows 10, 11
ReleasedMay 19, 2026
Chocolatey downloads273.6K
GitHub stars★ 2.6K

2 versions of NUnit 4 Framework are listed here, from August 10, 2025 to the current 4.6.1. Each one links to the publisher’s own installer files.

Version	Date	Size	Files
4.6.1Latest	May 19, 2026	—	64-bit ZIP 32-bit ZIP Release notes See release notes for details.
4.4.0	August 10, 2025	—	64-bit ZIP 32-bit ZIP

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NUnit 4 Framework: all versions and old releases

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