1.HypothesisWorks / hypothesisThe property-based testing library for Pythonpythontestingfuzzingproperty-based-testingPythonOther license9.1K total700 forks+18 starsfrom 9,113 · score 2.94
2.web-platform-tests / wptTest suites for Web platform specs — including WHATWG, W3C, and otherstestinghtmltest-automationbrowserw3cwhatwg+13 moreHTMLOther license6.3K total4K forks+10 starsfrom 6,294 · score 2.40
3.pester / PesterPester is the ubiquitous test and mock framework for PowerShell.powershellpester-testspowershell-testsassertionsmockingmock+5 morePowerShellOther license3.4K total479 forks+8 starsfrom 3,367 · score 2.20
4.shouldly / shouldlyShould testing for .NET—the way assertions should be!assertiontestingunitshouldC#Other license3.4K total426 forks+3 starsfrom 3,422 · score 1.39