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Open-source unit testing and test runners tools: 28 compared

Test runners and assertion libraries for unit and integration tests.

28 tools are listed here. Each one is open source under an OSI-approved license and meets the inclusion rules. The table is sorted by GitHub stars, descending, on the fetch date. Select a column heading to sort by another column.

Metrics as of , from the GitHub or GitLab API of each repository. Refreshed monthly.

Unit testing and test runners tools. Sorted by GitHub stars, descending. Select a column heading to change the sort.
Jest45,46312026-09-181v30.5.22026-09-181MITTypeScriptactive
GoogleTest39,57212026-08-101v1.18.02026-09-171BSD-3-ClauseC++active
Testify26,21112026-08-191v1.12.12026-09-021MITGoactive
Mocha22,89712026-09-171v12.0.22026-09-191MITJavaScriptactive
Catch221,48912026-08-251v3.16.02026-09-141BSL-1.0C++active
AVA20,82812026-05-171v8.0.12026-05-171MITJavaScriptslow
PHPUnit20,05212026-09-15113.3.42026-09-221BSD-3-ClausePHPactive
Vitest17,14312026-09-151v5.0.12026-09-181MITTypeScriptactive
Jasmine15,81612026-08-151v7.0.12026-08-201MITJavaScriptactive
pytest14,52112026-06-1919.1.12026-09-211MITPythonactive
Pest11,72312026-09-171v5.2.12026-09-181MITPHPactive
Quick9,82712024-07-231v7.6.22026-03-171Apache-2.0Swiftslow
Ginkgo9,05612026-09-171v2.33.02026-09-221MITGoactive
Hypothesis9,00312026-09-081v6.168.02026-09-081MPL-2.0Pythonactive
Chai8,26912025-12-221v6.2.22026-09-211MITJavaScriptactive
JUnit7,05612026-08-071r6.1.32026-09-221EPL-2.0Javaactive
doctest6,86812026-07-061v2.5.32026-03-271MITC++slow
bats-core6,27512026-07-211v1.14.02026-09-211MITShellactive
tape5,79712026-06-181v5.10.22026-09-181MITJavaScriptactive
Kotest4,78912026-09-101v6.2.52026-09-171Apache-2.0Kotlinactive
xUnit.net4,60512026-09-121v3-4.0.12026-09-221Apache-2.0C#active
Spock3,63012025-12-111spock-2.42026-07-281Apache-2.0Javaactive
minitest3,41312026-05-011v6.0.62026-07-221MITRubyactive
Pester3,34512026-09-0916.2.02026-09-091Apache-2.0PowerShellactive
AssertJ2,84712026-01-241assertj-build-3.27.72026-09-221Apache-2.0Javaactive
NUnit2,62712026-05-191v4.6.12026-09-201MITC#active
TestNG2,05912026-01-2217.12.02026-09-221Apache-2.0Javaactive
rspec-core1,22812014-02-281v2.14.82024-11-301MITRubyarchived

1 Fetched from the GitHub or GitLab API on . Hover a value for its own date.

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Guide

Open-source unit testing tools: how the list is sorted and what each covers