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Disable Add-on Compatibility Checks

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Rated 4 out of 5 stars (108)
42,073 users

Secure Login Requires Restart

Secure Login is an extension for Firefox integrated password manager.

For Firefox > 51, try my WebExtension implementation: https://addons.mozilla.org/en-US/firefox/addon/secure-login-webextension/

Rated 4 out of 5 stars (400)
42,034 users

YouTube Center

YouTube Center contains all kind of different useful functions which makes your visit on YouTube much more entertaining.

Rated 3 out of 5 stars (312)
38,053 users

PrintPDF Requires Restart

This allows users on Windows and Linux to print web pages to PDF. Mac users you already have this functionality.

Rated 3 out of 5 stars (206)
37,014 users

Selenium IDE Button Requires Restart

Just one simple toolbar button to open Selenium IDE. You need to have installed Selenium IDE: http://seleniumhq.org/projects/ide/

Rated 5 out of 5 stars (8)
36,761 users

Tampermonkey

Tampermonkey is the world's most popular userscript manager.

Rated 4 out of 5 stars (43)
36,268 users

APK Downloader

Download APK files from Google Play Store (Android Market) for free, from your browser.

Rated 4 out of 5 stars (85)
33,870 users

Web2PDF Converter Requires Restart

Web page to PDF conversion tool

Rated 3 out of 5 stars (92)
33,853 users

Show My Password Requires Restart

You are annoyed because your password fields are always scrambled though nobody else but you can see the screen? This most advanced unscrambling addon shows your passwords in readable letters, while being fully customizable to fit your needs.

Rated 5 out of 5 stars (83)
32,648 users

Reload Plus Featured

Supercharge your reload button and hotkeys!

Rated 5 out of 5 stars (84)
32,062 users

Minimize On Start and Close Requires Restart

A remake of the MinimizeToTray-extension made to fit the Windows 7 taskbar. Instead of minimize the window to the tray it minimize it to the taskbar. It can minimize on startup, when the window is closed and/or when the esc key is pressed.

Rated 4 out of 5 stars (115)
30,949 users

Diagnostics for Adblock Plus

Diagnostics tool for Adblock Plus, provides some insight into internal processes of Adblock Plus.

Not yet rated
30,831 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (179)
29,449 users

PDF Mage

Save any page as PDF

Rated 4 out of 5 stars (54)
29,196 users

Grab and Drag Requires Restart

Enables Adobe Acrobat-style grab and drag scrolling, Flick gestures, and Momentum scrolling in Firefox. Useful for (older) pen or touchscreen-based devices for which these gestures are not natively supported. Not useful on Windows 8 touch devices.

Rated 4 out of 5 stars (274)
28,741 users

Restart

"Restart" menu and button, with configurable shortcut key.

Rated 5 out of 5 stars (62)
28,684 users

Memory Restart Requires Restart

Gives you a quick way to restart if memory usage is too high.

Rated 4 out of 5 stars (132)
27,556 users

Nightly Tester Tools Requires Restart

Useful tools for the nightly tester.

Rated 4 out of 5 stars (194)
24,687 users

YouTube Plus

YouTube with more freedom.

Rated 5 out of 5 stars (76)
24,626 users

RAMBack Requires Restart

RAMBack will cause Firefox to issue an internal notification to free up memory that is otherwise held for performance purposes. Additional items will be hooked into this notification in the future.

Rated 3 out of 5 stars (150)
24,060 users