EveryStep!

Selenium is a suite of tools specifically for testing web applications. Selenium IDE is a Firefox add-on that records clicks, typing, and other actions to make a test, which you can play back in the browser. Selenium Remote Control (RC) runs your tests in multiple browsers and platforms. Tweak your tests in your preferred language.

iMacros was designed to automate the most repetitious tasks on the web. If there’s an activity you have to do repeatedly, just record it in iMacros. The next time you need to do it, the entire macro will run at the click of a button! With iMacros, you can quickly and easily fill out web forms, remember passwords, create a webmail notifier, download information from other sites, scrape the Web (get data from multiple sites), and more. You can keep the macros on your computer for your own use, or share them with others by embedding them on your homepage, blog, company Intranet or any social bookmarking service. The uses are limited only by your imagination! »

PhearJS renders dynamic webpages using PhantomJS: fetch a page, render it and return a pretty JSON object. PhearJS is offered as a hosted API as well as an open source solution that you can host yourself.

Screenster provides visual UI test automation for web applications. It is the only tool that validates the screens that users actually see.

A scripting tool for browser automation. By executing user given instructions contained in a javascript "TRON" file it automatically browses web, clicks on links, fills out forms, etc.

Stable, self healing, end-to-end test automation via machine learning.

DéjàClick is a web recorder and Super Bookmark utility designed exclusively for Firefox. You can record and bookmark your browser activities, then with a single click, replay the entire sequence all over again.