- Any Firefox
- Firefox 54.0
- Firefox 44.0
- Firefox 26.0
- Firefox 20.0
- Firefox 18.0
- Firefox 17.0
- Firefox 4.0
- Firefox 3.6
69 matching results
AlertStopper Requires Restart
"Google Chrome"-like option for blocking repetitive alert(), confirm() and prompt() dialogs. Gets rid of spam dialogs and other infinite loops!
XUL Gear Requires Restart
IDE for FireFox plug-in developers and business analysts who create User Interface mock-ups. A WYSIWYG XUL editor
JSON-DataView Requires Restart
Displays JSON data in a collapsible tree structure with syntax highlights.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
QuickJava Requires Restart Featured
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
Execute JS Requires Restart
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.
Controle de Scripts Requires Restart
Firebug Autocompleter Requires Restart
Firebug command line autocomplete.
Dafizilla ViewSourceWith Requires Restart
The main goal allows users to open (and in some cases edit) page source with external applications.
FireSSH Requires Restart Featured
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.