Most Popular Extensions
Sort by:
KarClient Requires Restart
By installing this plugin you will be able to record and playback songs at kSolo.com...
BatchDownload Requires Restart
Like FlashGet's batch download,but special designed for some image site!
Google Redesigned 2 Requires Restart
Ported version from Firefox to be compatible with Seamonkey 2.
A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.
bbeContainer Requires Restart
an extension that allows users to edit local files with browser-based editors.
Extended Link Properties + (obsolete) Requires Restart
This application extends the Link Properties and displays File Size, Last Modified Date, Content Type and HTTP Header of a link...
Warning: developing discontinued, see least
GNOMErunner/GTK for Seamonkey 2.x Requires Restart
GNOMErunner/GTK - a classic unix theme for Seamonkey 2 (aka suiterunner)
using the GTK+ stock items and icons from the gnome iconset, resulting in a more consistent desktop integration on Unix.
Conspiracy Requires Restart
Shows flag/country of involved Certification Authorities (CAs) for secured pages.
Quickfile Requires Restart
Quickfile is an extension for Mozilla Thunderbird which initially aimed to speed up filing of messages into your mail folder heirarchy but now includes features for navigation and folder creation...
Channel Guard Requires Restart
Channelguard disables plugins and protocol handlers to ensure maximum security against side-channel attack.
Advanced Dork: Requires Restart
Advanced Dork: gives quick access to Google's Advanced Operators directly from the context menu...
Rai Smooth Streaming Player (raismth) Requires Restart
Rai.tv live channels, vod and replay contents w/o *light (Silverlight/Moonlight)
Notification Storage Requires Restart
Provides the Notification Storage service which is missing from SeaMonkey 2.24-2.32
Relaxed the HTML Validator Requires Restart
"Relaxed" is a HTML validator which validates HTML documents using it's own schema definitions written in Relax NG with embedded Schematron patterns.
Perapera Japanese-German Dictionary File Requires Restart
This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.
Perapera Japanese-French Dictionary File Requires Restart
This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.
To create your own collections, you must have a Mozilla Add-ons account.