Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
20,967 users
Honey
Automatically find and try coupon codes with 1-click. Works at thousands of stores in the US, Canada, Australia, India and the UK.
287,688 users
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
66,539 users
Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
15,046 users
Classic Theme Restorer (Fx29-56)
Squared tabs, application menu, add-on bar, small button view and many more 'old' features for 'Firefox 29-56', not for Firefox 57+! Release builds Beta builds
239,126 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.
65,221 users
TableTools2 - Copy/Sort/Chart/Filter Table&More!
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.
8,760 users
Octotree
Add-on to display GitHub code in tree format
8,858 users
谷歌翻译 - 智能云翻译
本插件使用谷歌翻译引擎，可在任意网页中选词进行智能翻译。
887 users
Page Translate
Translate whole page using Google Translate
2,141 users
ErrorZilla Plus
This extension is a replacement of Firefox official error page, which adds some useful tools to aid your troubleshooting. The tools include: - Google Cache (view the page cached by Google) - Coralize (use Coral CDN proxy to connect again) - Wayback (view an earlier version of this page) - Ping (use a server to ping the target server) - Trace (trace the network route from you to the server) - Whois (look up who owns the website) - Proxify (use your custom web proxy to connect)
3,220 users
Selenium IDE: Screen Capture Extension
Extension to Selenium IDE for various screen capture capabilities.
1,992 users