Must Haves: Development

by purefusion

  • Updated Sept. 2, 2010

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

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Rated 4 out of 5 stars 336 reviews

161 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

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Rated 4 out of 5 stars 216 reviews

38 users

View HTTP headers of a page and while browsing.

Font Finder by Ben Dodson, Eric Caron, others

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Rated 4 out of 5 stars 80 reviews

8 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

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Experimental

Rated 4 out of 5 stars 27 reviews

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

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Rated 5 out of 5 stars 47 reviews

7 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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