printplus Requires Restart
PDF export support by Gecko.
Prevent duplicate tabs. Allow only one tab for a url. If you click a link that is already opened in a tab, then existing tab would be focused instead of opening a new tab. This works even across firefox windows.
Remember Mismatched Domains Requires Restart
The Remember Mismatched Domains extension for Firefox and Thunderbird adds a "Don't warn me again about this certificate for this domain" checkbox to the Domain Mismatch and Expired Certificate warning windows. When selected the domain...
Blue Essence Seamonkey Theme Requires Restart
Dark navigator theme based on a default Classical theme and now works on Linux :)
WebPG for Mozilla Requires Restart
An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey
Preview lightweight theme when hover on menuitems in Apply Theme menu.
Zorcher Requires Restart
Selecting a small text on the page do not need to copy it into the search bar of your browser or search engine. Just press the right mouse button and select the search service from the available list.
Changes the mask character used in password fields.
From/To Column Requires Restart
Add a “From/To” column which shows the recipient if you are the sender.
Switch the current search engine on the fly! Press Control + Shift + Down Arrow to switch to the next search engine or Control + Shift + Up Arrow to select the previous one.
A full featured color selector tool, to work with colors, and easily find the colors you want.
Save better history for fragment URLs.
ToggleDocumentColors_ Requires Restart
Adds a toolbar button and keyboard shortcut to switch between the default page colors and user-defined colors.
Firefox shortcut: Control-Shift-C
SeaMonkey shortcut: Control-K
Link Status Redux Requires Restart
Shows an indicator on the status bar in front of the link address when the mouse cursor is over a link to a page you have bookmarked or visited before.
Dynamic creation of bookmark-style toolbar buttons which you can customize.
SeaMonkey Vertical Tab Bar Requires Restart
Tab bar on the side of the window for SeaMonkey.
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
Want to change from one language to another? Zing! and the locale is switched.
Telegram Web Messenger brings Telegram right into your Firefox Sidebar.
Duplicate Tab Requires Restart
Duplicate Tab allows you to clone a tab along with its...