Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Up & Coming Extensions
Allows to copy selected text as plain text by adding a 'Copy as Text' menu item to context menu.
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
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!
All Menus Button No Restart
Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.
Free Memory Button No Restart
Free unused memory that Firefox is currently using.
uBlock Origin No Restart
Finally, an efficient blocker. Easy on CPU and memory.
Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.
uMatrix No Restart
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Sharp Color Picker No Restart
A full featured color selector tool, to work with colors, and easily find the colors you want.
Bookmark Toolbar Menu Button No Restart
Show the contents of the Bookmarks Toolbar in a drop down menu. This compresses the bookmark menu into one button that you can put on any toolbar you want to.
Watch videos without limit
NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
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).
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
RedirectCleaner No Restart
RedirectCleaner cleans Redirects from Links
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.
Add more items to Add-ons Manager context menu.
Toggles dictionaries automatically or manually and displays the currently selected one
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
This add-on is not compatible with your version of SeaMonkey because of the following:
- Add-on has opted into strict compatibility checking.