Recently Updated Extensions
Bugmail (fixed version) Requires Restart
A bugzilla companion (fixed version). Originally maintained by Fabrice Desré.
Auto delete cookies, localStorage and IndexedDB objects as soon as they become unused
WebRTC Permissions UI Toggle Requires Restart
A toolbar button for SeaMonkey to bypass the missing WebRTC permissions dialog and temporarily allow media capture.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
The most efficient blocker for Firefox.
No ads, no tracking, and insanely faster page loads.
Sort and Search Customization Dialogs Requires Restart
Sort and search for buttons in (any) toolbar customization dialog
Classic Password Editor Requires Restart
Adds the ability to create and edit entries in the password manager.
Send Later Button Requires Restart
A simple button to invoke the (already existing) send later functions.
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
Sets the spell check dictionary based on the first recipient
ConfigDate Requires Restart
ConfigDate allows to configure the "Date" column in message threadpane. When displaying the message header, it is possible to display the (default) formated date or the senders local sent time (Date-String).
QuoteCollapse Requires Restart
Collapse and expand quotes. Please see the extension homepage for further information.
Note that MozDev has shut down long ago (mailing list etc). Add-On homepage, source code and issue tracker are on GitHub, as linked on this page.
PlayFlash 64bit Requires Restart
Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.
PlayFlash 32bit Requires Restart
Flash player plugin - unofficial xpi repack for 32bit browsers.
Use when official plugin installer is not suitable.
All binary files are copyrighted by their authors and distributed for free.
QuickFolders (Tabbed Folders) Requires Restart
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
ReminderFox Requires Restart Featured
ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.
Dorando keyconfig Requires Restart
A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)
Mozilla Archive Format, with MHT and Faithful Save Requires Restart
— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
AVIM Requires Restart
Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.