No. 2 of 32 ·Unit Testing Frameworks

NUnit

Windows · Mac · Linux · Android · iPhone · Self-hosted · API

Freedom report

Three barsScore 6.7

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely5 of 6 device platforms
DocumentedPlans, terms and facts published

NUnit is ranked #2 of 32 in unit testing frameworks on Freedom251. It runs on Android, API, iOS, Linux, macOS, Self-hosted, Windows. There is a free plan.

NUnit plans and pricing

All plans

NUnit Framework Free Open source · MIT license · free for commercial and noncommercial use nunit.org · 4 Oct 2026

Compared on unit testing frameworks

Free plan: Yes
Supported languages: C#, VB.NET, F#, C++
Parameterized cases: Yes
Parallel execution: Yes

Best NUnit alternatives

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The record

Purpose: NUnit is a unit-testing framework for .NET languages.
Open source: NUnit 3 and higher is released under the MIT license, which permits free use in commercial and noncommercial applications and libraries.
Project backing: The NUnit Project is a member of the .NET Foundation, which provides guidance and support for the project.
Community: The project is run by a core team and community contributors; its packages had passed 600 million NuGet downloads at the time stated on the site.
Test dependencies: NUnit 5 adds DependsOnTest and DependsOnFixture attributes for expressing test and fixture dependencies.
Repeated tests: NUnit 5 lets Repeat set a required pass percentage from 1 to 100 and optionally stop once the outcome is determined.
.NET versions: NUnit 5 ships builds targeting net462, net8.0, and net10.0.
Development tools: The installation guide describes NUnit project templates for Visual Studio, Visual Studio Code, and Rider, plus the dotnet new nunit command.
Test adapters and analyzers: The Visual Studio project template includes references to the NUnit Test Adapter, NUnit Analyzer, Microsoft Test SDK, and coverlet code coverage package.
CI: The documentation says the NUnit3TestAdapter can automate test runs on clean machines, including Azure DevOps and GitHub Actions build agents.
Install options: The project recommends installing NUnit using its installation approaches and makes release packages available through NuGet and GitHub.
Pre-release builds: Developer alpha versions are published when pull requests are merged into the main branch and are available through a MyGet NuGet feed.
Security and compliance: The pages reviewed state the MIT license and project governance, but do not state security certifications or compliance attestations.
Price from: Free

Where it ranks on Freedom251

Best Unit Testing Frameworks in 2026#2 of 32

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Sources

nunit.org· checked 4 Oct 2026
docs.nunit.org/articles/nunit/V5NewFeatures.html· checked 4 Oct 2026
docs.nunit.org/articles/nunit/getting-started/installa· checked 4 Oct 2026
docs.nunit.org/articles/nunit/getting-started/download· checked 4 Oct 2026