automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
18.160 users
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
50.796 users
Simple Tab Groups
Create, modify, and quickly change tab groups
92.958 users
Clippings
Save frequently-entered text for pasting later.
14.724 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
350.117 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
63.992 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
360.278 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
80.924 users
Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
9.009 users
Bitwarden Password Manager
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.
750.776 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
28.211 users
Feedbro - RSS Feed Reader
Advanced Feed Reader - Read news, blogs, social media or any RSS/Atom/RDF source.
48.471 users
Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
140.740 users
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
12.211 users
Print Edit WE
Edit the contents of a web page prior to printing or saving. Elements in the web page can be edited, formatted, hidden or deleted. Unwanted content, such as adverts and sidebars, can easily be removed.
41.600 users
Snap Links Plus
Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.
19.081 users
Unhook: Remove YouTube Recommended Videos Comments
Hide YouTube related videos, comments, video suggestions wall, homepage recommendations, trending tab, and other distractions.
78.337 users
EPUBReader
Read ePub files right in Firefox. No additional software needed!
136.832 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
491.128 users
Copy PlainText
Copy Plain Text without any formatting
29.360 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
155.585 users
Emoji
It permits just with a single click to copy an emoji. There is a search-box and the "Most used emojis" section (the first one). If you want to send feedback or report bug, please contact me: https://www.emojiaddon.com/help
21.866 users
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
65.783 users
DuckDuckGo Privacy Essentials
Simple and seamless privacy protection for your browser: tracker blocking, cookie protection, DuckDuckGo private search, email protection, HTTPS upgrading, and much more.
1.521.725 users
Don't track me Google
Removes the annoying link-conversion at Google Search / maps / ...
68.354 users