Up & Coming Extensions

Subscribe

Custom Style Script (Inject desired CSS or JS)

Add Custom JavaScript Codes or Styles to any Page.

Rated 5 out of 5 stars (8)
7,346 users

Youtube Dark Mode Compatible with Firefox 57+

Switch youtube to dark mode. Dark mode will help devices save battery and useful for your sleeping. This dark mode is supported by https://www.emojionline.org

Rated 5 out of 5 stars (71)
1,657 users

Stay On Top

NOTE: Development for this addon has stopped. I recommend checking out Topick instead.

Keeps a Firefox window on top of other windows

Rated 5 out of 5 stars (1)
3,296 users

Add-on Update Checker Requires Restart

Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.

Rated 4 out of 5 stars (56)
20,948 users

Plugin Safety

Plugin Safety as a Shield Study

Rated 4 out of 5 stars (20)
2,620 users

Modify Headers Requires Restart

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

Rated 4 out of 5 stars (78)
161,010 users

New Tong Wen Tang Compatible with Firefox 57+

Traditional and Simplified Chinese Converter

Rated 5 out of 5 stars (9)
2,072 users

Weather Extension Compatible with Firefox 57+

The best way to see the weather right in your browser. Easier than looking outside!

Rated 4 out of 5 stars (23)
1,072 users

KillSpinners

Stops pages from loading indefinitely.

Rated 4 out of 5 stars (32)
2,611 users

Small Nav Bar Requires Restart

Small Nav Bar will resize the navigation bar, so you can gain a little extra space. Mini nav bar. Compact back/forward button.

Rated 4 out of 5 stars (3)
1,074 users

Time Restart

Allows you to specify the time to restart browser.

Rated 4 out of 5 stars (19)
7,045 users

Browsec VPN

Best VPN addon for Firefox.

Rated 4 out of 5 stars (176)
168,591 users

BP Proxy Manager Requires Restart

Change your proxies with a single click. Automatically clears the cache and the cookies before changing the proxy.

Rated 3 out of 5 stars (2)
59,761 users

CleanQuit (Desktop)

Clean up the mess and quit! Adds a CleanQuit button to firefox in order to clean up history and quit!
Port of the CleanQuit mobile version!

Rated 3 out of 5 stars (14)
2,545 users

CryptoFox Requires Restart

CryptoFox is an encryption/decryption tool for Mozilla Firefox, with dictionary attack support for cracking MD5 passwords.

Rated 3 out of 5 stars (7)
1,864 users

Bulk Media Downloader Compatible with Firefox 57+ Featured

Grab and download media (image, audio, and video) resources by monitoring network (like FlashGot or Flash video downloader extensions)

Rated 4 out of 5 stars (88)
114,589 users

ydwd Compatible with Firefox 57+

调用有道词典的开放接口完成网页内查词和翻译(支持中英互译)。开放源代码:https://github.com/amit-gshe/ydwd

Rated 4 out of 5 stars (3)
1,425 users

kiosk-costaisa Requires Restart

RKiosk (Real Kiosk), fullscreen kiosk mode: all menus, keys etc. disabled
Costaisa variant.

Rated 3 out of 5 stars (9)
3,131 users

External Application Buttons 2 Requires Restart

Lightweight add-on to create toolbar buttons that launch various external applications.

Rated 5 out of 5 stars (25)
14,136 users

UI Eraser

Hide Firefox User Interface.

Rated 5 out of 5 stars (16)
5,712 users