Stylish-Custom Requires Restart
custom additions to Stylish extension
Flexible Sidebar allows to change sidebar width by dragging the handles.
NiceReader Requires Restart
NiceReader is designed for web reading. You can customize font, color, size, background, specify the elements to read, filiter ad elements, filiter ad strings, automaticaly turn page.
Open With Vivaldi Browser sends pages from Mozilla Firefox to Vivaldi browser.
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Switch tabs by scrolling with the mouse wheel in the tab bar.
Google Hangouts Web Messenger brings Google Hangouts right into your browser to chat with your friends.
GNOMErunner Options Requires Restart
Allows to customize GNOMErunner theme
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
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.
Select link text with easy mouse gestures.
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.
Beta builds on versions page!
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!
Telegram Web Messenger brings Telegram right into your Firefox Sidebar.
YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.
Menu Wizard Requires Restart
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
Open With Internet Explorer sends pages from Mozilla Firefox to Internet Explorer.
Nightly Tester Tools Requires Restart
Useful tools for the nightly tester.
Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.