Interface Customizations

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Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (6)
814 users
Updated January 20, 2017

Flexible Sidebar

Flexible Sidebar allows to change sidebar width by dragging the handles.

Not yet rated
0 users
Updated January 19, 2017

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.

Rated 5 out of 5 stars (2)
329 users
Updated January 17, 2017

Open With Vivaldi Browser

Open With Vivaldi Browser sends pages from Mozilla Firefox to Vivaldi browser.

Rated 5 out of 5 stars (1)
171 users
Updated January 6, 2017

Theme Font & Size Changer

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.

Rated 5 out of 5 stars (180)
103,883 users
Updated January 6, 2017

Tab Wheel Scroll

Switch tabs by scrolling with the mouse wheel in the tab bar.

Rated 4 out of 5 stars (126)
10,886 users
Updated January 5, 2017

Google Hangouts Web Messenger

Google Hangouts Web Messenger brings Google Hangouts right into your browser to chat with your friends.

Rated 5 out of 5 stars (3)
2,900 users
Updated December 29, 2016

GNOMErunner Options Requires Restart

Allows to customize GNOMErunner theme

Not yet rated
699 users
Updated December 26, 2016

Restart Application Button

Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.

Rated 4 out of 5 stars (3)
682 users
Updated December 21, 2016

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.

Rated 4 out of 5 stars (35)
1,046 users
Updated December 20, 2016

Drag-Select Link Text

Select link text with easy mouse gestures.

Rated 5 out of 5 stars (34)
1,357 users
Updated December 19, 2016

Classic Toolbar Buttons

'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!

Rated 5 out of 5 stars (161)
38,052 users
Updated November 29, 2016

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!

Rated 5 out of 5 stars (116)
25,276 users
Updated November 28, 2016

Telegram Web Messenger

Telegram Web Messenger brings Telegram right into your Firefox Sidebar.

Not yet rated
251 users
Updated November 24, 2016

YouTube Video Player Pop Out

YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.

Rated 4 out of 5 stars (6)
10,903 users
Updated November 2, 2016

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

Rated 5 out of 5 stars (199)
72,710 users
Updated October 28, 2016

Open With Internet Explorer

Open With Internet Explorer sends pages from Mozilla Firefox to Internet Explorer.

Not yet rated
4,837 users
Updated October 27, 2016

Nightly Tester Tools Requires Restart

Useful tools for the nightly tester.

Rated 4 out of 5 stars (194)
38,567 users
Updated October 21, 2016

Open With Google Chrome

Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.

Rated 5 out of 5 stars (9)
11,321 users
Updated October 18, 2016

CuteButtons

Adds icons to buttons and/or menus.

Rated 4 out of 5 stars (105)
7,120 users
Updated October 14, 2016