My Must Have!

by LandisTwo

7 Add-ons in this Collection

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 336 reviews

167 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Session Manager by Michael Kraft

Rated 5 out of 5 stars 850 reviews

149 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 78 reviews

14,291 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

www.Translate by Trident Software

Rated 3 out of 5 stars 33 reviews

17 users

Multi-Translator from Google, Bing and Pragma.
Translation tool for your Firefox and Thunderbird with a simple and friendly interface.

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 109 reviews

11 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

DOM Inspector Plus! [dm] by Javier "DarthMadara"

Download Now

Experimental

Rated 4 out of 5 stars 6 reviews

29 users

Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.

Yandex Slovari by korey4ik

Rated 5 out of 5 stars 2 reviews

4 weekly downloads

Use http://slovari.yandex.ru/ dictionary to translate words.

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections