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FireTray
Requires Restart
A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...
Blue Essence Seamonkey Theme
Requires Restart
Dark navigator theme based on a default Classical theme and now works on Linux :)
NiceReader
Requires Restart
NiceReader is designed for web reading. You can customize font, color, size, background, specify the elements to read, filiter ad elements, filiter ad strings, automaticaly turn page.
Show History Popup
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
HTitle (discontinued)
Requires Restart
Hide title bar if window is maximized.
This add-on has been discontinued!
Legacy extensions support will be dropped in Firefox 57. If you interest in CSD on Linux, please track progress on https://bugzilla.mozilla.org/show_bug.cgi?id=1283299.
Stylish Sync
MonkeyFix
Requires Restart
Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).
Shift+LeftClick XUL
Requires Restart
This simple addon has only this functionality, nothing else: it opens links in a new active tab with Shift+LeftClick (left mouse button click).
Better use https://addons.mozilla.org/ru/firefox/addon/shiftleftclick-opens-links-in-/ for FireFox.
Tab Clicking Options
Requires Restart
Select actions for various clicking events on a tab or the tab...
CuteMenus - Crystal SVG
Requires Restart
Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.
Adds icons to all menus along with some other features...
jsbtn
CheckBoxMate Lefedor Edition
Requires Restart
Check multiple checkboxes by drawing a rectangle around them. FF6 version.
I've made this version since i did need it for use with RTM,
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...
Text2Link
Requires Restart
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
Export All Certificates
Xclear
Requires Restart
Safari-like icons in the URL, search and find fields to clear their contents.
SM Home Button
RC Print
Profile Buttons
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
To create your own collections, you must have a Mozilla Add-ons account.
