Most Popular Extensions
MR Tech About:About Requires Restart
Adds the following "about:" options to the Help menu
Sidebar Add Custom Tab Requires Restart
Adds an 'add custom tab' option to the Tabs drop-down menu of SeaMonkey's sidebar.
Tategaki Requires Restart
Tategaki allows vertical writing-mode on mail compose window.
Flashblock Ultimate Alt Zero Requires Restart
This extention allow to remove focus from embedded flash object by pressing Ctrl+Esc or Ctrl+F12 (see mozilla superbug: 78414) and move focus back by Alt+Esc or Alt+F12
USE THIS INSTEAD: https://addons.mozilla.org/en-US/firefox/addon/focus-regainer/
Share to Google+ Page Requires Restart
Share to your Google+ Profile or Google+ Page with just click of a button.
SolusVM VPS Monitor Requires Restart
Status Monitor for SolusVM-backed VPS.
Connectify.io is absolutely FREE simple to get started. The best part is this extension is the ease of use and remarkable idea of combining SMS with Infusionsoft directly in your browser. Search contacts, create tags, complete forms, and much more.
Super Mario Cross Requires Restart
The legendary arcade game that has survived the ages and can still be found today in modern arcades. You may have played this game when you were a kid and want to have a bit of fun remembering what it was like.
SeaMonkey Update Server Cert HotFix Requires Restart
Adds the current Certificate used by the Official Update Server to SeaMonkey's acceptable list.
Flexible Sidebar allows to change sidebar width by dragging the handles.
Kukkuniiaat Requires Restart
A Greenlandic spell checker for Mozilla products.
Content Scrollbar Requires Restart
Easily navigate through the long pages. This extension will generate clickable markers for all the headings of a page and places them proportionately on the scrollbar. This extension is a port of Chrome's 'Scrollbar of Contents' to Firefox.
Singlish to Sinhalese Requires Restart
Singlish to Sinhalese Conversion provide by Subasa Language Service
Forwarding to the available information resources Requires Restart
The system is designed to redirect from alias with obsolete and invalid network and a local address information resources on the act for which the resource is available. The system can perform advanced search resources.
xSidebar Requires Restart Featured
Firefox style sidebars for SeaMonkey...
DMOZ Bookmarks Requires Restart
Download any dmoz category to your browser bookmarks.
XML Digital Signature Tool Requires Restart
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
SM Home Button Requires Restart
Navigation bar Home Button (resurrected by sailfish)
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.
Autoplay Toggle NonRestartless Requires Restart
This extension performs the same function as Autoplay Toggle, but as a legacy overlay extension. This should work in cases where Autoplay Toggle doesn't. SeaMonkey and Pale Moon are supported.