Web Developer Extension
Web Developer Extension on chrispederick.com: "The Web Developer extension for Mozilla Firefox and Mozilla adds a menu and a toolbar to the browser with various web developer tools."
Mozilla Update :: Extensions -- More Info: Autofill
http://tinyurl.com/4aqps is an autofill extension for Firefox. Autofill is a semi-faithful recreation of Google's IE Autofill function in Mozilla Firefox (with some additional features).