Marc Guillemot pointed me to Canoo WebTest's reports, which capture the HTML source after every page load, and compiles it into nice reports. http://webtest.canoo.com/webtest/reports/selftest/WebTestReport.html We can probably do the same (plus capture screenshots, if we like). A Selenium Core results handler might allow Core to call back to signify that a page has loaded, submitting the HTML of the page. If Selenium RC's server implemented this callback, we could also take that opportunity to capture a PNG screenshot. We'd clearly want to make sure this was only optional; saving screenshots and HTML source on every page load could get very slow and/or expensive on the disk space. As a follow-on task, we'd presumably also need some way to compile all of the data into a nice HTML report. (It's not clear how we'd integrate that with the tests from other language test runners; it might even be impossible...?)