essential addons

by nk23x

30 Add-ons in this Collection

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 277 reviews

226,113 users

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

EPUBReader by epubreader

Rated 4 out of 5 stars 213 reviews

272,468 users

With EPUBReader you can read ePub files just in Firefox. No additional software needed!

Provider for Google Calendar by Philipp Kewisch

Rated 4 out of 5 stars 928 reviews

294,520 users

Allows bidirectional access to Google Calendar

Theme Font & Size Changer by Baris Derin, Access Firefox Project

Rated 5 out of 5 stars 174 reviews

93,245 users

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Session Manager by Michael Kraft

Rated 4 out of 5 stars 466 reviews

236,614 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.

Torrent Tornado by Oleksandr

Rated 5 out of 5 stars 97 reviews

36,978 users

A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 192 reviews

129,692 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

YesScript by Jason Barnabe

Rated 4 out of 5 stars 208 reviews

52,759 users

A JavaScript blacklist

Screengrab (fix version) by Oleksandr

Rated 5 out of 5 stars 259 reviews

98,497 users

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

Mozilla Archive Format, with MHT and Faithful Save by Christopher Ottley, Paolo Amadini

Rated 4 out of 5 stars 253 reviews

104,799 users

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

Remote XUL Manager by Jorge Villalobos

Rated 5 out of 5 stars 37 reviews

79,710 users

Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.

Copy Urls Expert by Kashif Iqbal Khan

Rated 5 out of 5 stars 77 reviews

73,660 users

Copy multiple urls (links) to clipboard. Provides options to copy urls of all opened tabs and urls in selected text. You can customize the format of copied urls. You can also open multiple links from clipboard.

Disable Add-on Compatibility Checks by Kris Maglione

Rated 4 out of 5 stars 109 reviews

63,973 users

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Form History Control by Stephan Mahieu

Rated 5 out of 5 stars 95 reviews

18,302 users

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

Control for which webpage form history is saved or not.

Pure URL by VEG

Rated 5 out of 5 stars 60 reviews

5,848 users

Removes garbage like "utm_source" from URLs
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