Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
Replaces the error page with a lolifox appearance with additional features.
Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.
No Caption No Restart
Hide the caption of Firefox
Adds a toolbar button and keyboard shortcut to switch between the default page colors and user-defined colors.
Firefox shortcut: Control-Shift-C
SeaMonkey shortcut: Control-K
Black background and white text No Restart
Makes black background and white text on every page
Replaces the error page with a more stylish appearance with additional features.
Drag-Select Link Text No Restart
Select link text with easy drag gestures.
JSONovich No Restart
Pretty-prints JSON content in the browser for easy, unobtrusive viewing.
Adds Firefox-style tab closers into SeaMonkey.
Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.
True Full Screen in SeaMonkey No Restart
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.
Rebrand SeaMonkey as Firefox 3 (by 2008WindowsVista and a11RyanC2)
Provides a new tab button for the navigation toolbar.
Sort and search for buttons in (any) toolbar customization dialog
Regain possesion of your good "Find As You Type" search bar in Firefox and SeaMonkey!
Loop HTML5 Video and Music.
Old Default Image Style No Restart
Restores the default image style used for top-level images in previous versions of Firefox.
Adds metadata and sortable tags to the password manager.
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.