Add-ons
Must Haves: Development
by purefusion
About this Collection
Essential extensions for developers. New ones added as discovered. Keeping this list just to the essentials in this category, so see all my collections for other categories of must-have extensions.
5 Add-ons in this Collection
User Agent Switcher
by chrispederick
158 users
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Live HTTP Headers
by Daniel Savard, Nikolas Co
37 users
View HTTP headers of a page and while browsing.
Font Finder
by Ben Dodson, Eric Caron, others
7 users
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Mozilla Labs - Jetpack Prototype
by Mozilla Labs
Experimental
0 users
Jetpack Prototype is an experiment in making it easy to build Firefox add-ons using common web technologies.
Console²
by Philip Chee, zeniko
6 users
Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.
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