Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
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Choose from thousands of extra features and styles to make Firefox your own.
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4,742 matching results
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Firesizer
Requires Restart
Allows you to resize the window to specific dimensions.
NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.
Spanish (Venezuela) spell check dictionary
Diccionario en español para Venezuela.
- Corrector Ortográfico (Spell Checker)
- Tesauro de Sinónimos (Thesaurus)
- Separación Silábica (Hyphenation)
¡Hecho en Venezuela!
MR Tech Disable XPI Install Delay
Requires Restart
Disables default delay when installing...
Signature /Auto Paste /Prefill Fourms
Requires Restart
Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )
Scriptish
Requires Restart
The greatest user script engine on the Internet (a fork of Greasemonkey).
Private Anonymous Search (Google + Bing + HTTPS)
Privatelee.com (HTTPS) combines the best results from Google and Bing with the ultimate private search engine.
Privatelee does not save IP address or set uniquely identifiable or ad network cookies.
Features like WOT rating, infinite scrolling
Add-ons Manager Context Menu
Requires Restart
Add more items to Add-ons Manager context menu.
Duden.de Suche
WorldIP - Geo Add-on with Security Features
Requires Restart
Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter
Afrikaans spell checker
Free Mp3 Music Search for Download
Mp3 Search is a torrent search engine which leads directly to pages with direct links to mp3 files. So you just need to enter song name and then download free mp3 music. And you don't need to register to download music.
Disable Addon Compatibility Checks (Version 4-56)
Reinstates the extensions.checkCompatibility preference.
CookieKeeper
Toggle Proxy
Requires Restart
The move to Webextensions by Mozilla for Firefox 57+ has made it impossible to modify about:config, this holds Firefox proxy settings. Therefore, this and many other addons will become obsolite from Firefox 57+ onwards unless Mozilla update the API.
German dictionary (de_CH)
German dictionary igerman98 (de_CH, Switzerland), for Firefox, Thunderbird und Seamonkey.
MozLab
Requires Restart
Remote shell and test-driven development tool for Mozilla developers
Quick Locale Switcher 2
Requires Restart
Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.
Diagnostics for Adblock Plus
Diagnostics tool for Adblock Plus, provides some insight into internal processes of Adblock Plus.
To create your own collections, you must have a Mozilla Add-ons account.
