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Classic Theme Restorer Requires Restart

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29-56 (Windows / MacOSX / Linux).

Release builds
Beta builds

Rated 5 out of 5 stars (1,109)
322,638 users

Beyond Australis

Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!

Rated 5 out of 5 stars (363)
20,483 users

YouTube Plus Compatible with Firefox 57+

YouTube with more freedom.

Rated 5 out of 5 stars (120)
21,292 users

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 (186)
94,115 users

Reader Compatible with Firefox 57+ Featured

Reader is the ultimate Reader tool for Firefox.

Rated 5 out of 5 stars (77)
22,575 users

TableTools2 - Copy/Sort/Chart/Filter Table&More! Requires Restart

Does everything for an HTML table: Copy (table/row/column/cell), Sort (multi-column), Search (regex, range operations ...), Filter, Chart, Statistics, Rearrange, Combine/Compare. To use: Right click in a real HTML table for the "tabletools2" option.

Rated 5 out of 5 stars (57)
11,658 users

OmniSidebar

Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!

Rated 5 out of 5 stars (128)
53,661 users

Pearltrees Compatible with Firefox 57+ Featured

Pearltrees lets you organize all your interests.

Rated 5 out of 5 stars (246)
12,814 users

Tab Groups

Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.

Rated 5 out of 5 stars (728)
89,209 users

Fastest Search - Browse/Search Faster!

Search/browse faster than ever! Ctrl-Shift-F for whole-word/regex/all tabs/diacritic search;Create custom engines;Smart SearchBox;Preview results;Auto copy plain text, drag-n-drop image/link. Not multi-process compatible! http://y2u.be/gDlLrVZ54L0

Rated 5 out of 5 stars (140)
3,569 users

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 (131)
29,421 users

Pray Times! Requires Restart

Display daily Muslim prayer times.

Rated 5 out of 5 stars (348)
4,979 users

YouTube High Definition Compatible with Firefox 57+ Featured

YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

Rated 5 out of 5 stars (264)
361,926 users

VimFx

Short, Vim-style keyboard shortcuts for browsing and navigation, for a near mouseless experience.

Rated 5 out of 5 stars (202)
20,004 users

Cas24Play ban evasion

Cas24play browser plug-in - stable web site access.

Rated 5 out of 5 stars (50)
258 users

FindBar Tweak

Between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, it has everything to make the Find Toolbar a powerful and accessible research tool!

Rated 5 out of 5 stars (277)
30,167 users

Octotree Compatible with Firefox 57+

Add-on to display GitHub code in tree format

Rated 5 out of 5 stars (24)
2,986 users

YouTube Video Replay

YouTube Video Replay is a new tool that lets you replay YouTube Videos.

Rated 5 out of 5 stars (24)
6,080 users

Twitter App

Twitter App brings Twitter right into your Firefox Sidebar.

Rated 5 out of 5 stars (24)
9,488 users

Open With Photoshop

Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.

Rated 5 out of 5 stars (75)
11,887 users