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Mouse Gestures Suite Requires Restart
Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.
UnMHT
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.
Restart App Button
Restart the current application, as you might need to do after installing a new extension or theme.
Disable Add-on Compatibility Checks
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
ProfileSwitcher Requires Restart
It adds some options to launch easily other profiles and the Profile Manager.
Toolbar Buttons
Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.
OverbiteFF Requires Restart
Add legacy protocol support back to Firefox and SeaMonkey with OverbiteFF, which restores support for Gopher servers, plus CSO/ph searches, finger, whois and more! Cross-platform JavaScript runs anywhere Firefox does.
Keyfixer Requires Restart
(Note: Version 0.5.34 has been updated to work with Firefox 34)
Keyfixer patches the key bindings for Mac OS X users of Firefox and Thunderbird to match the key bindings of Windows
Is It Compatible? Requires Restart
**Notice: This addon is no longer maintained.** Are your addons compatible with the next version of Firefox? Find out straight from the Addons window! **Version 0.6.0 is available from the Versions page, it was never approved by AMO**
Focus Regainer Requires Restart
Return focus from embedded object back to browser on browser hotkeys pressed.
AutoCopy Requires Restart
Select text and it's automatically copied to the clipboard. Also pastes on middle click.
Restart application Requires Restart
Restart the application with one click (or Ctrl Shift Z)
Focus Regainer Lite Requires Restart
Return focus from embedded object back to browser on browser hotkeys double pressed.
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