Dizionario italiano
Add support for Italian to spellchecking
67,925 users
The Camelizer - Price Tracker
Add price history charts and price watch features to Firefox when viewing product pages on Amazon. Use it to make informed purchasing decisions and to receive price drop alerts via email, Twitter, or RSS feed.
65,835 users
User-Agent Switcher
Easily override the browser's User-Agent string
65,394 users
Cookie-Editor
Cookie-Editor lets you efficiently create, edit and delete a cookie for the current tab. Perfect for developing, quickly testing or even manually managing your cookies for your privacy.
64,107 users
I still don't care about cookies
Community version of the popular extension "I don't care about cookies" https://github.com/OhMyGuus/I-Dont-Care-About-Cookies
63,456 users
Save webP as PNG or JPEG (Converter)
Convert any image (WebP, AVIF, etc.) to PNG or JPEG (with choice of quality) for downloading. Right-click context menu calls up format options overlaid on the image. Read the detailed description and check the screenshots for more info.
63,429 users
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
63,174 users
划词翻译
一站式划词 / 截图 / 网页全文 / 音视频翻译扩展,支持谷歌、DeepL、ChatGPT、百度等 9 个国内外主流翻译服务,均可用于全文翻译。能在 PDF 里使用。支持辅助键、快捷键、悬浮取词。
63,026 users
Okta Browser Plugin
Okta Browser Plugin
62,847 users
Bitdefender TrafficLight for Firefox
Bitdefender TrafficLight adds a strong and non-intrusive layer of security to your browsing experience
62,838 users
Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
62,159 users
Popup Blocker Ultimate
Best Pop-up Blocker for Firefox. (Best in Rating, Performance, This addon does NOT collect user's data same as Poper Blocker)If your Firefox version is not 57+ please install version 8.1 from Official website.
61,718 users
60,331 users
Trend Micro Toolbar
See Links to Risky Websites at a Glance. Enhance Your Protection from Trend Micro Security Software.
60,098 users
YouTube Downloader
Looking for youtube video downloader? Install the YouTube Downloader and download video from YouTube.
59,852 users
Task Manager Tab & Custom Web Search
Add the Task Manager Tab & Custom Web Search extension and get productivity-enhancing tools online by clicking the favicon on the toolbar & enjoy access to Yahoo® search from your browser search bar.
58,869 users
Dark Mode (WebExtension)
A global dark theme for the web
57,766 users
Manuals Hunt and Search
Add the Manuals Hunt and Search extension to access over 30,000 manuals by clicking the favicon on the toolbar, and get web results from Yahoo® Search
57,320 users
Flash Player
Flash Player runs and saves any flash file across the web. The Addon allows you to add any flash file into the app's playlist and access them on any website by simply clicking an extension icon.
56,151 users
Proxy SwitchyOmega
Manage and switch between multiple proxies quickly & easily.
56,093 users
Old Reddit Redirect
Ensure Reddit always loads the old design
56,057 users
Quick Live News & Custom Web Search
Install the Quick Live News & Custom Web Search extension and click the icon on the toolbar to access top news stories & customized web search from your browser
55,734 users
Web of Trust, MyWOT/WOT: Website Reputation Rating
Instantly know which websites to trust! WOT protects you while you browse, warning you against dangerous sites that host malware, phishing, and more.
54,699 users
54,674 users
Redux DevTools
DevTools for Redux with actions history, undo and replay.
54,268 users