Up & Coming Extensions
RefControl Requires Restart
Control what gets sent as the HTTP Referer on a per-site basis.
Google Hangouts Web Messenger brings Google Hangouts right into your browser to chat with your friends.
Add-ons Manager Context Menu Requires Restart
Add more items to Add-ons Manager context menu.
Link Status Redux Requires Restart
Shows an indicator on the status bar in front of the link address when the mouse cursor is over a link to a page you have bookmarked or visited before.
LookOut+ Requires Restart
LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
This version is a fix for Seamonkey 2.*.
CryptoData Requires Restart
Easily and quickly to encrypt / decrypt:
Private messages via e-mail, blogs, social networks, forums, websites, images, etc
Support: Firefox, Thunderbird and SeaMonkey
Dorando keyconfig Requires Restart
A modified Dorando's tool to rebind keys in Mozilla apps. It is designed to be a drop-in replacement, and will keep your old settings. (See details for upgrade instructions.)
RC Print Requires Restart
Adds a "Print" option to the Right-Click context menu.
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
LookOut (fix version) Requires Restart
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey
SeaTab-X-2 Requires Restart
Adds Firefox-style tab closers into SeaMonkey.
Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.
InlineDisposition changes the disposition of Content-Disposition response headers from attachment to inline; this prevents servers from forcing the browser to save a file and allows that file to be viewed in the browser, if the browser supports it.
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.
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Open With Adobe Illustrator is a new companion for web designers, graphic designers and in general whom like to use Illustrator.
Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246
Install Browser Extensions straight from GitHub Repositories
Adds a small and simple button to YouTube videos that allows you to quickly download the audio of the video as an MP3 file (quality of the MP3 is as high as the video offers) without having to leave the page.
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.