After @szafranek  hint and suggestion, wru  landed almost at the end of this Wikipedia List of unit testing frameworks  page. If you use this tweet size hand made imperfect script in the wikipedia page console: a=q="querySelectorAll",[].map.call(document[q](".mw-headline,.wikitable"),function(v,i){i%2?a=v.textContent:o[a]=v[q]("tr").length},o={}),o You gonna see that JavaScript is third when it comes to number of test frameworks ... and not sure that's good, anyway, here a quick description of mine. About wru You can find most info in github page itself but essentially wru  is a generic purpose, environment agnostic, JavaScript tests framework compatible with both client and server, where client means every bloody browser, and server means Rhino, node.js, and recently phantom.js too. To be really fair, wru  is not exactly a unit test framework  since it does not provide by default anything related to mocks or stubs. However, wru  is so tiny and unobtru...