Take a stroll through the great ocean of applications for the beloved Mozilla Seamonquey, icon by victor1410, deviantart.com
AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.
Put your mouse over any Japanese words on a webpage and it gives you the pronunciation and definition. English, German, French, and Russian dictionaries; Save and export words for studying later!
NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
Firefox based theme for SeaMonkey 2.x
ScribeFire Classic is a blog editor that integrates with Firefox and lets you easily post to your blog.
ScribeFire Classic is no longer supported; you should install ScribeFire Next: https://addons.mozilla.org/en-US/firefox/addon/scribefire-next
Convert text URLs and links to images into thumbnails.
Based on the original by Rus Hughes.
Walnut for Seamonkey, based on icons from art.gnome.org, and sporting a wooden look. Including full support for Lightning.
Nautipolis for SeaMonkey, based on icons from art.gnome.org. Includes support for help, inspector, downloadstatusbar, downloadmgr, calendar, quicknote, offline and toolbarext. Tested with googlebar. Also includes 'cutemenu' icons