Top-Rated Extensions

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Google Black Bar Menu Classic No Restart

This simple script replaces Google grid navigation with old navigation bar.

Rated 4 out of 5 stars (3)
343 users

LastColour

Colour your text to the "last-picked" colour you chose in the colour-picker. Now you don't have to use the colour picker every time.

Rated 4 out of 5 stars (3)
306 users

AdRemind.Me

Want to keep your favourite Web sites alive even when you're using Adblock Plus? AdRemind.Me helps you to supporting your favourite Web sites in deactivating periodically Adblock Plus ad filters only on these sites for 20 seconds.

Rated 4 out of 5 stars (3)
1 user

ScrapBook AutoSave Improved

ScrapBook AutoSave Addon, with some extra features.

Rated 3 out of 5 stars (5)
585 users

Vagex Firefox Add-on

Vagex is a view exchange site which will expose your video to thousands of members in order to increase the view count. With our system, YouTube will see all the views your videos are getting and promote it even more, having a sort of viral effect.

Rated 3 out of 5 stars (6)
8,724 users

Togglify Add-on Toggler No Restart

Adds toolbar buttons for each restartless add-on (including user scripts and plugins) to toggle its enabled state.

Rated 3 out of 5 stars (7)
29 users

Mailsleuth

Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!

Rated 3 out of 5 stars (7)
836 users

ShowIP

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

Rated 3 out of 5 stars (282)
89,277 users

YouTube Downloader and Converter

Easy to Download YouTube Videos in FLV and MP4 and Convert to MP3,AVI etc.

Rated 4 out of 5 stars (3)
19,288 users

IE Tab + (FF 8+, 7, 6, 5, 4, 3.6, 3.5, SeaMonkey)

IE Tab + is an enhanced version of IE Tab. It supports FF 3.5 or greater, integrates IE Tab with Adblock Plus in the IE Tab engine, and synchronizes cookies between IE and Firefox. You can easily import settings from the original IE Tab into IE Tab +

Rated 3 out of 5 stars (82)
159,143 users

Right Click Watch Ignore

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

Rated 3 out of 5 stars (6)
223 users

Validaty

One Click Validator. Provides you a button to validate a page using a validator like w3c or another user defined

Rated 3 out of 5 stars (6)
1,132 users

SmartWhois Launcher

This extension allows you to launch SmartWhois and perform a Whois query on the current URL. SmartWhois is a useful network information utility that allows you to look up all the available information about an IP address, hostname or domain...

Rated 3 out of 5 stars (6)
573 users

Forumzilla

Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...

Rated 3 out of 5 stars (5)
122 users

Viewhance No Restart

Additional functionality for the browser's default image and video viewer.

Rated 5 out of 5 stars (1)
456 users

Standalone SeaMonkey Mail No Restart

Use SeaMonkey as a standalone e-mail client. Set up a default browser for links opened from Mail & Newsgroups.

Rated 5 out of 5 stars (1)
22 users

True Full Screen in SeaMonkey No Restart

This extension enables true full screen mode in SeaMonkey for HTML5 video players, slide-shows, etc. and also for full screen invoked manually with the F11 key.

Rated 5 out of 5 stars (1)
105 users

Youtube Video Size

Watch Youtube videos in full page size.

Rated 5 out of 5 stars (1)
134 users

Key config

This add-on provides configurable keyboard shortcuts for several actions and a dialog to customize them.
All shortcuts can be redefined in Tools -> Key settings

Rated 3 out of 5 stars (14)
3,113 users

History Janitor

Firefox does not give an option to remove the oldest entries from the history. History Janitor automatically purges history entries on Firefox startup. The user is allowed to specify a number of days. Everything older than this number is deleted!

Rated 3 out of 5 stars (11)
1,826 users