Searches the selected text using a search engine from your bookmarked search engines

This plugin will call a selected number by clicking the right mouse button.

This is an unofficial extension adding the Yandex search provider

Recherchez sur Wiktionnaire, un mot sélectionné, à partir du menu contextuel (bouton droit)

Easily find & copy any HTML5 symbol(s) from your browser toolbar popup UI

Finds the URLs in the comments of NSFW posts and displays a link next to the post.

A popup dictionary for quickly looking up word-meanings. It also allows to you to save new words that you like and build your vocabulary.

Browse your browser history like a boss.

Other extensions that can do it aren't compatible with Firefox 57+ anymore, only work in firefox and/or aren't open source. This extension tries to solve all of this

A menu option to search selected text on Sogou, by yun.

StartXXL extended Search and New Tab. Create your custom hompage and new tab startpage.

This add-on provides the translation and definition of the word under the mouse pointer as a tooltip.
Just press [Ctrl + Shift]

Right click an image or some selected text and use that for a secure search using Google Images.

Sort By Review Count for Amazon sorts product search results by most reviewed.

Access to a floating mobile version of Wikipedia on any webpage

Allows you to filter the options in any drop down menu to quickly find something. You can filter by 'contains', 'not contains', 'begins with', 'ends with', 'does not begin with', and 'does not end with' or by any combinations thereof.

Developed by Purse.io to enhance functionality when interacting with Amazon and the Purse.io service by adding functionality within Amazon

Purse.io gets you 5-33% off anything on Amazon when spending Bitcoin and Bitcoin Cash

Open Source

Uses onion.live service to warn against phishing URLs and provide a list of safe .onion mirrors for your favorite deepweb / darknet services.

Remove google tracking redirects from search results. This completely disables the function on desktop.

Find coupons and earn cashback at over 2,000 stores worldwide when you shop at Best of Discount! Save with online rebates, deals, promo codes and discounts.

Adds YouTube to the list of search engine shortcuts

Displays a sidebar that let you translate with the most useful translator : Linguee.

Filter domains from your Google searches.

Recon extension for Firefox browser is a collection of an IP, Network & Malware tools that can be used to get information about IP Addresses, Websites, and DNS records.

1. Jelöld ki a nem ismert szót az oldalon.
2. Kattints a jobb egérgombbal a kijelölt szón (helyérzékeny menü előhozása).
3. Kattints a bal egérgombbal a "Keresés a DictZone Angol-Magyar szótárban: ..." keresésednek megfelelő menüpontján.

Adds Arch wiki search engine and suggestions to your browser.

SoundCloud To Mp3 Downloader is an online extension for downloading songs from SoundCloud in Mp3 format.

Automatically find coupon codes and apply the best one to your cart!

ส่วนขยายนี้ช่วยให้คุณสามารถค้นหาคำศัพท์ได้ภายในไม่กี่วินาทีด้วยการคลุมคำที่ต้องการค้น และคลิกขวาแล้วคลิกที่ "ค้นคำด้วย Longdo Dict" เพียงเท่านี้คุณก็จะได้ความหมายของคำที่คุณต้องการจะค้นหาแล้ว

Effortlessly summarize web page content using AI technology

Adds shortcuts to the online German dictionary DWDS.