- Any Firefox
- Firefox 49.0
- Firefox 26.0
- Firefox 20.0
- Firefox 18.0
- Firefox 17.0
- Firefox 16.0
- Firefox 14.0
- Firefox 11.0
- Firefox 5.0
- Firefox 4.0
32 matching results
Web Developer Requires Restart Featured
The Web Developer extension adds various web developer tools to the browser.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
Firebug Autocompleter Requires Restart
Firebug command line autocomplete.
PrefBar Requires Restart
JS Switch Requires Restart
Whois Lookup & Hosting & DNS & Site Flags Firefox Requires Restart
IP Whois Lookup & Website Reviews & Rating. Display country flag indicating website location. Alexa and Norton Antivirus Site Adviser. Supported: GoDaddy, NetworkSolutions, Dotster, 1and1, NameCheap, Register, Yahoo, 123-Reg, FatCow, Enom, FastHosts.
Execute JS Requires Restart
FireRainbow Requires Restart
View Dependencies Requires Restart
View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.
Local Load Requires Restart
DejaClick Requires Restart
Record, bookmark and replay your browser activities in a snap with DéjàClick. Designed for Firefox, DéjàClick can handle the most complex websites - including AJAX, Flash, forms and more. With a single click you can repeat your most common tasks.
Developer Assistant Requires Restart
A suite of tools for developers.
Controle de Scripts Requires Restart
Phoenix Requires Restart
Good Website Inspector Requires Restart
Good Website Inspector is an extended ruleset for YSLOW, a Firefox AddOn, to check source codes of HTML pages to get easy and fast hints to optimize the current page.
Customize Your Web Requires Restart
Customize Your Web (CYW) let's you customize your favorite websites with just a few clicks. What Greasemonkey is for developers is CYW for non-developers. You can remove/rearrange /modify elements, add keyboard shortcuts and do many other things.
JSON-DataView Requires Restart
Displays JSON data in a collapsible tree structure with syntax highlights.
AlertStopper Requires Restart
"Google Chrome"-like option for blocking repetitive alert(), confirm() and prompt() dialogs. Gets rid of spam dialogs and other infinite loops!