It does browser testing with browser automation (think JsTestDriver), QUnit style static HTML page testing, testing in headless browsers (PhantomJS, jsdom), and more. Write your test case with Buster.JS and run it both in Node.js and in a real browser.
There’s a public API for almost everything. You can write reporters for customizing the output of buster test (we already have xUnit XML, traditional dots, specification, tap, TeamCity and more), write extensions that wrap other testing frameworks (we already have buster-jstestdriver), add your own testing syntax (we ship with xUnit and BDD), and much more. Again, the overview lists many of these things.
Via Jan Hesse