Developer Toolbar Requires Restart
Web Developer Button adds a button to open the Web Developer tools available on Firefox 16+.
Simulate color blindness in your web browser.
A extension that aims to prevent developers from using wrong environments (you never know when you will test stuff in production thinking that you are on a testing environment).
Both celebrate the human contribution to the Internet and encourage developers to include a credits file... This extension simply adds an unobtrusive link to humans.txt for the current page at the top left corner.
Show My IP Address
A simple way to check the security of the website you're visiting using the SSLLabs and SecurityHeaders sites.
Auto-fill text areas with a bug report template.
Semantic Checker Requires Restart
Checks your document for semantic elements and highlights them.
BugTracker.NET Screen Capture Requires Restart
Take screen captures and send them to your BugTracker.NET website. BugTracker.NET is a free, open-source, web-based bug tracker or customer support issue tracker, in daily use by thousands of development and customer support teams around the world.
Ook? Video Ook! Requires Restart
Ook? Video Ook! enables you to download embedded videos from several systems (such as YouTube, Google Video, Pornotube, Metacafe and many more). ...
phpMyAdminTools Requires Restart
phpMyAdminTools - Advanced phpMyAdmin Tools
CMS Backend Opener Requires Restart
Opens a new tab/window with backend-login of the CMS, which the current website is using. Just press [Alt] + [y].
Supported CMS's: Typo3, Joomla, WordPress, Drupal, Contao, WebsiteBaker, Weblication, CMSQLite and Oxid.
Addon designed for in browser editing of Simple Storage for Addons.
ConsoleExport Requires Restart
ConsoleExport is a Firebug extension that allows exporting logs from the Console panel.
Selenium Dot Formatter Requires Restart
A Dot Formatter for Selenium IDE