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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)
127 users

Saved Pages Conversion Wizard Requires Restart

Convert previously saved pages between MAFF, MHT, and HTML with a separate support folder.

This functionality is also available as part of the Mozilla Archive Format add-on.

Not yet rated
123 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)
121 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)
118 users

BNR Exchange Rates Requires Restart

Show the exchange rates from BNR in the statusbar.

Rated 4 out of 5 stars (4)
114 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)
113 users

foxmeter Requires Restart

An HTTP analyzer addon for Firefox, fork from HttpFox with features like: summary by host, and more coming soon

Rated 5 out of 5 stars (1)
112 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)
112 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)
108 users

ConQuery Requires Restart

Context searching for everyone and URL manipulation tool for advanced users...

Rated 5 out of 5 stars (38)
108 users

Dybutar

Dynamic creation of bookmark-style toolbar buttons which you can customize.

Rated 5 out of 5 stars (10)
105 users

Google Reader New Style Minimalistic By DemianGod

Removes all the junk from New Google Reader and just gives you the search and collapsable subscriptions + favicons. By DemianGod

Also you can install the Script for GreaseMonkey.
Download from: http://userscripts.org/scripts/show/30242

Rated 4 out of 5 stars (9)
100 users

Yoolki Arabic Keyboard Requires Restart

Write arabic text "bil 3arabi" on any web page without the need for an Arabic Keyboard.

Rated 5 out of 5 stars (10)
99 users

AdWords OK Requires Restart

Google Adwords Statistical Relevance View Expansion: Don't make decisions on average values. AdWords-OK expands your AdWords statistics by min and max-values. Your values will stay in the longterm with a probability of over 95% between this values.

Rated 4 out of 5 stars (5)
98 users

Subasa Tamil to Sinhala Transliteration Requires Restart

Tamil To Sinhalese Transliteration provide by Subasa Language Service

Rated 4 out of 5 stars (1)
97 users

docked JS-Console Requires Restart

docks the JS-Console to the Bottom of the Browser

feel free to have a look at the source (see below) and suggest enhancements (borstel33 web de , Subject: docked JS-Console)

Rated 4 out of 5 stars (10)
97 users

Tab Clicking Options Requires Restart

Select actions for various clicking events on a tab or the tab...

Rated 4 out of 5 stars (70)
97 users

Foxfiltre Requires Restart

Adds a many graphic filters to the main context menu.

Not yet rated
90 users

Extension Test Requires Restart

A simple add-on for extension testers, especially AMO editors and developers who plan to submit their add-ons to AMO.

Rated 5 out of 5 stars (6)
89 users

Hindi Pop up Requires Restart

After installing this extension, just hover the mouse on top of an English word and a pop-up will appear with suggestions of possible hindi equivalents.

Rated 5 out of 5 stars (3)
86 users