Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Adds Firefox-style tab closers into 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.
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.
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
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.
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).
Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter
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).
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.
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.
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.
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
Now Available for: Firefox, Thunderbird and SeaMonkey!
Context searching for everyone and URL manipulation tool for advanced users...
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.
Replaces the error page with a lolifox appearance with additional features.