Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
Display mail route Requires Restart
Displays country icons for the stations (server) the mail has been routed.
YouTube Video Player Speed play YouTube videos in whatever speed you want
Shrunked Image Resizer Requires Restart
Make your photos smaller, so they don't take forever to email or send to websites.
Controle de Scripts Requires Restart
From/To Column Requires Restart
Add a “From/To” column which shows the recipient if you are the sender.
View Source Requires Restart
Shows all source files of a webpage.
HostIP.info Geolocation Plugin Requires Restart
Displays Geolocation information for a website using hostip.info data. Works with all versions of Firefox...
Scroll Menus On Drag Requires Restart
Scrolls menus when dragging, fixing bugs 194319, 240709, and 349932. Scrolls all autorepeatbuttons and prevents bookmarks menu hiding on all menuseparators.
Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.
BNR Exchange Rates Requires Restart
Show the exchange rates from BNR in the statusbar.
FAYT Revived Requires Restart
Regain possesion of your good "Find As You Type" search bar in Firefox and SeaMonkey!
SourceEditor Requires Restart
View and Edit source of HTML element...
SyncKolab Requires Restart
SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).
Bitacora Requires Restart
Shows an icon on the status bar when the mouse cursor is over a link to a page you bookmarked or visited before. Update for fcp's addon
Ad Blocker lets you block all ads, tracking & malware from the web world. It is an effective solution to browse the web without offensive and annoying ads you hate to see.
printplus Requires Restart
PDF export support by Gecko.
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)
Gmail S/MIME Requires Restart
Send and receive signed and encrypted messages in Gmail.