Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 and Seamonkey >= 2 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.
Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey
Stylish Sync No Restart
Sync engine for Stylish with backup / restore facility.
uBlock Origin No Restart
Finally, an efficient blocker. Easy on CPU and memory.
Adblock Plus No Restart Featured
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Facebook Share Button No Restart
Facebook Share Button lets you share any web page on your Facebook Timeline by a quick Facebook button.
FlashGot Mass Downloader Featured
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
Adds Firefox-style tab closers into SeaMonkey.
GNotifier No Restart
Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.
Youtube Video Replay No Restart
Youtube Video Replay is a new tool that lets you replay Youtube Videos.
Hide title bar if window is maximized.
This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).
F.B. Purity - Cleans Up Facebook No Restart
F.B. Purity hides the ads, app spam and other annoying clutter from your facebook news feed, lets you increase the font size, change colours plus many more features and generally makes Facebook a lot less annoying to use.
This extension allows to open links in new tabs with right-click directly and using “long” left-click.
This is very useful for touchpads on notebooks and for mice without middle button.
Ziftr Alerts (formerly FreePriceAlerts) No Restart
You do the shopping. We'll do the searching. It's that simple.
Adds the ability to create and edit entries in the password manager.
Youtube Video Center No Restart
Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.
Extension Auto-Installer No Restart
Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.
Slim Add-ons Manager No Restart
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.
Context searching for everyone and URL manipulation tool for advanced users...