Interface Customizations

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S3.Menu Wizard

Customize menus : Helps removing, moving and renaming menus and menu items
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (15)
1,836 users
Added May 5, 2014

Shift+LeftClick XUL

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.

Not yet rated
1 user
Added April 12, 2014

Zing! Locale Switcher No Restart

Want to change from one language to another? Zing! and the locale is switched.

Rated 5 out of 5 stars (1)
57 users
Added April 1, 2014

SeaTab-X-2

Adds Firefox-style tab closers into SeaMonkey.

Rated 5 out of 5 stars (8)
283 users
Added February 17, 2014

Search Engine Quick Switcher No Restart

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.

Rated 3 out of 5 stars (2)
16 users
Added January 29, 2014

Old Addon Manager

Brings back Firefox 3.x Addon Manager

Not yet rated
31 users
Added January 11, 2014

Lightweight Themes Preview for SeaMonkey No Restart

Preview lightweight theme when hover on menuitems in Apply Theme menu.

Rated 1 out of 5 stars (1)
8 users
Added December 4, 2013

Duplicate Tab Blocker No Restart

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.

Rated 3 out of 5 stars (7)
1,008 users
Added November 28, 2013

Lightweight Themes Manager No Restart

Manage your installed personas (lightweight themes).

Rated 5 out of 5 stars (3)
13,327 users
Added November 17, 2013

Sea Fox

Transform SeaMonkey into Firefox 3.x

Rated 5 out of 5 stars (4)
153 users
Added November 11, 2013

MonkeyFix

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).

Rated 5 out of 5 stars (3)
335 users
Added September 24, 2013

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (4)
2,493 users
Added September 6, 2013

Big Navigation No Restart

Increases the navigation links on the pages

Rated 5 out of 5 stars (4)
721 users
Added July 18, 2013

RC Print

Adds a "Print" option to the Right-Click context menu.

Not yet rated
390 users
Added July 8, 2013

Safe for Amoled No Restart

Darkens the background of the page

Rated 4 out of 5 stars (11)
2,969 users
Added June 17, 2013

Google Redesigned 2

Ported version from Firefox to be compatible with Seamonkey 2.

A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.

Not yet rated
42 users
Added May 27, 2013

NiceReader

NiceReader is designed for web reading.You can customize font, color, background and size, etc, specify that interested you by selection tool. Can filiter the ad using high zIndex, iframe, mouse event, and clear the ad strings in text.

Rated 5 out of 5 stars (1)
157 users
Added May 15, 2013

HTML5 Loop

Loop HTML5 Video and Music.

Rated 5 out of 5 stars (1)
2,394 users
Added April 5, 2013

Stylish Tools

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

Rated 4 out of 5 stars (1)
872 users
Added April 3, 2013

Show History Popup No Restart

When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.

Rated 4 out of 5 stars (2)
77 users
Added March 23, 2013