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Cycle Collector Analyzer, about:ccdump

Display the graph created by cycle collector. Open "about:ccdump" page after the installation.

Rated 4 out of 5 stars (6)
130 users

Zorcher Requires Restart

Selecting a small text on the page do not need to copy it into the search bar of your browser or search engine. Just press the right mouse button and select the search service from the available list.

Rated 5 out of 5 stars (10)
130 users

From/To Column Requires Restart

Add a “From/To” column which shows the recipient if you are the sender.

Rated 5 out of 5 stars (2)
129 users

Remember Mismatched Domains Requires Restart

The Remember Mismatched Domains extension for Firefox and Thunderbird adds a "Don't warn me again about this certificate for this domain" checkbox to the Domain Mismatch and Expired Certificate warning windows. When selected the domain...

Rated 5 out of 5 stars (66)
129 users

RSE Tools Requires Restart

Tools for working with rapidshare and links from other popular file hosting and sharing services.
Features: get rapidshare links from a page, test selected rapidshare links, search rapidshare files for selected terms, etc.

Rated 4 out of 5 stars (20)
127 users

safeSERP Requires Restart

Prevents Google and Yandex from obfuscating and hijacking links in SERP.
Allows to copy/paste *direct* links from Google/Yandex search results instead of redirects.

Rated 5 out of 5 stars (2)
126 users

CuteMenus - Crystal SVG Requires Restart

Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.

Adds icons to all menus along with some other features...

Rated 4 out of 5 stars (103)
126 users

BackupHelper Plus for ScrapBook Plus / XSidebar Requires Restart

BackupHelper is an Add-On to the firefox extension ScrapBook / ScrapBook Plus. This is modified version of the original Add-On. Uninstall the original BackupHelper before you use this extension.

Rated 5 out of 5 stars (1)
122 users

Web Server Check Tool Requires Restart

A tool to perform basic checks on web and DAV servers.

Not yet rated
121 users

Expiry Canary Requires Restart

An extension to warn about nearly-expired website SSL certificates.

This simple addon probably needs updating for the upcoming changes in Firefox; however, I'm afraid I don't have time to learn the new stuff. If you can maintain it, contact me!

Rated 5 out of 5 stars (5)
119 users

AMO Browsing for SeaMonkey

This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.

Rated 5 out of 5 stars (3)
116 users

Pic Zoom Requires Restart

Zoom in and out of any image on a page

Not yet rated
115 users

ClassGerman

Korrigiert ärgerliche und den Lesefluß hemmende Schreibweisen auf Webseiten. Kann auch auf die in der Schweiz übliche Schreibung angepaßt werden.

Rated 4 out of 5 stars (7)
110 users

Focus Regainer Lite Requires Restart

Return focus from embedded object back to browser on browser hotkeys double pressed.

Rated 5 out of 5 stars (8)
108 users

RemindMeBot-Reddit Compatible with Firefox 57+

All the great features of /u/RemindMeBot in a quick and easy to use extension!

Rated 2 out of 5 stars (3)
107 users

Extensor

Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.

Rated 5 out of 5 stars (3)
107 users

Process Toggle

Toolbar panel for restarting the application with(out) multiple processes and for changing the maximum number of content processes (this requires Firefox 49 or newer).

Rated 5 out of 5 stars (5)
106 users

Bugmail Requires Restart

This extension adds bug status to the header pane. It currently supports Bugzilla, Trac, Flyspray and Launchpad.

Rated 4 out of 5 stars (24)
99 users

Right Click Watch Ignore Requires Restart

Adds "Watch Thread" and "Ignore Thread" to right click context menu in Thunderbird and Seamonkey.

Rated 3 out of 5 stars (6)
99 users

Reply to Multiple Messages

Add menu commands for replying to multiple messages at the same time.

Rated 5 out of 5 stars (1)
97 users