@lleclerc_zlab I've used Selenium WebDriver, I created a tool for testing for our internal use (called it "Troglodyte") as we did not have testers then, I really enjoyed that. I used Geb (http://gebish.org/) with Spock (http://spockframework.org) and Gradle (https://gradle.org/). You implement your test once and it may be run on a couple of different browsers in parallel (https://www.seleniumhq.org/docs/07_selenium_grid.jsp) with head-less browser as well, you get a screenshots from failed tests. I highly recommend Page Object Pattern (https://www.seleniumhq.org/docs/06_test_design_considerations.jsp#page-object-design-pattern) and of course Groovy, you can create a nice DSL (Domain Specific Language) with Groovy for testers to use.