"Alvaro Videla just wrote in to tell us about Firesymfony, a Firebug extension that provides an alternative to Symfony’s built-in web debug toolbar."
"Whether you're a network architect, a web developer, or a web administrator there's one tool that's a must have in your troubleshooting toolbox: a protocol analyzer..."
This module is a helper module for a customized Firefox plugin that displays Drupal debugging and SQL query information (thanks to integration with devel module) to the Firebug window.
Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
<sep/>contained as bookmarklets. Some of these do what FireBug or some of the standard sidebar tools in FireFox do, but could be useful in other browsers.