To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseLanguage Support
Sort by:
Simple Locale Switcher Requires Restart
An easier management of the user interface language
mid Requires Restart
More than 2000 dictionaries in 270 Kilobyte! Search multiple dictionaries at once!
ע\ع (Ayn\Ayn) Lookup [former ע\ع Converter] Requires Restart
GP text research tool: transliterates Arabic/Syriac/Aramaic texts to Hebrew writing system, uses Wikipedia as a dictionary utilizing ¨see in anther language¨ links. Interface to dictionaries and encyclopedias. Select a text and use the context menu.
Rikaichan Japanese Names Dictionary File Requires Restart
A dictionary file for Rikaichan.
Rikaichan Japanese-Dutch Dictionary File Requires Restart
This is a dictionary file add-on for the Rikaichan extension.
Rikaichan Japanese-English Dictionary File Requires Restart
This is a dictionary file add-on for the Rikaichan extension.
Rikaichan Japanese-French Dictionary File Requires Restart
A dictionary file for Rikaichan.
Rikaichan Japanese-German Dictionary File Requires Restart
A dictionary file for Rikaichan.
Rikaichan Japanese-Hungarian Dictionary File Requires Restart
This is a dictionary file add-on for the Rikaichan extension.
Rikaichan Japanese-Russian Dictionary File Requires Restart
A dictionary file for Rikaichan.
rikaichan Requires Restart
Japanese to English/German/French/Russian dictionary. Just hover the mouse on top of a word, and a popup appears. Automatically de-inflects verbs and adjectives. Detailed kanji view...
No Small Text
Set a minimum text size for all web content. Use the toolbar button to switch it on and off. NEW: Three preset sizes. NEW: Use mouse scroll on the toolbar button.
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.
ChatZilla zh-CN Language Pack Requires Restart
ChatZilla zh-CN language pack for ChatZilla 0.9.92
Charset Switcher Requires Restart
Supports to customize the Default Character Encoding for each sites.
WordReference Translator Requires Restart
Open a tab with WordReference's translation for the selected word. Through a floating link, or by pressing "D" key.
XUL/Migemo Requires Restart
This provides dictionary-assisted search (Migemo search) and regular expression powered search for "find in this page" and other features.
Locale2MUI Requires Restart
Sets Firefox/Thunderbird Locale to Windows (MUI) Language on startup
Słowniczek Requires Restart
Adds to context menu web dictonaries: Ling.pl, Dict.pl, Diki.pl, Angool.pl, MegaSłownik, Onet.pl: Tłumacz and Synonimy.pl
To create your own collections, you must have a Mozilla Add-ons account.