Interface Customizations

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True Full Screen in SeaMonkey

This extension enables true full screen mode in SeaMonkey for HTML5 video players, slide-shows, etc. and also for full screen invoked manually with the F11 key.

Rated 5 out of 5 stars (17)
3,422 users

InspectorWidget Requires Restart

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (9)
649 users

Duplicate Tab Requires Restart

Duplicate Tab allows you to clone a tab along with its...

Rated 5 out of 5 stars (181)
36 users

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...

Rated 5 out of 5 stars (66)
112 users

Open With Google Chrome

Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.

Rated 5 out of 5 stars (96)
8,513 users

FolderFlags Requires Restart

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (8)
3,410 users

Sea Fox Requires Restart

Transform SeaMonkey into Firefox 3.x

Rated 5 out of 5 stars (11)
315 users

Edit Bookmark Plus Requires Restart

Resize 'Add Bookmark' Popup / 'Edit This Bookmark' Popup, fixes tree selection bug, option to disable popup auto close & Update Url and/or Name of a bookmark with the Url/Title of current page.

Replacement of OpenBook addon

Rated 4 out of 5 stars (63)
2,552 users

Linkification Requires Restart

Converts text links into genuine, clickable links...

Rated 4 out of 5 stars (283)
14,302 users

Stylish Requires Restart

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (878)
317,881 users

Big Navigation

enlarging the navigation links on the pages

Rated 5 out of 5 stars (8)
401 users

Dybutar

Dynamic creation of bookmark-style toolbar buttons which you can customize.

Rated 5 out of 5 stars (11)
78 users

Tab Wheel Scroll

Switch tabs by scrolling with the mouse wheel in the tab bar.

Rated 4 out of 5 stars (131)
8,395 users

ImageTweak: zoom/rotate images and videos! Requires Restart

A no-clutter image viewer for Firefox that allows you to zoom, rotate and display images/videos against a custom background. ImageTweak is a must-have addon for any photographer or photography-loving user.

Rated 4 out of 5 stars (100)
2,331 users

Customizations for Adblock Plus

This extension provides various customization options for the Adblock Plus user interface.

Rated 5 out of 5 stars (15)
8,390 users

Restartless Restart

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

Rated 4 out of 5 stars (201)
11,416 users

Compact Menu 2 Requires Restart

Add a compact menu button to the navigation toolbar, and hide the menu bar.

Rated 4 out of 5 stars (353)
4,194 users

Single Key Tab Switch Requires Restart

Single Key Tab Switch provides configurable single hotkeys for switching tabs, like the 'Single-key shortcuts' feature of the Opera browser.

Rated 4 out of 5 stars (28)
733 users

Enhanced Priority Display Requires Restart

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (6)
959 users

Display Mail User Agent Requires Restart

Displays icon for user agent of received mails.

Rated 4 out of 5 stars (104)
24,367 users