Language Support

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S3.Google Translator

S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.

New Feature: Language learning!

Rated 5 out of 5 stars (290)
376,674 users

Quick Locale Switcher

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Rated 3 out of 5 stars (86)
179,859 users

Rikaichan Japanese-English Dictionary File

This is a dictionary file add-on for the Rikaichan extension.

Rated 4 out of 5 stars (7)
42,392 users

新同文堂 (New Tong Wen Tang)

NewTongWenTang is a tool to switch display Chinese content between traditional and simplified glyphs (中文繁簡體互轉工具)

Rated 4 out of 5 stars (97)
37,153 users

Dictionary Switcher

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (175)
23,237 users

Rikaichan Japanese Names Dictionary File

A dictionary file for Rikaichan.

Rated 5 out of 5 stars (3)
17,384 users

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (7)
15,123 users

www.Translate

Multi-Translator from Google, Bing and Pragma.
Translation tool for your Firefox and Thunderbird with a simple and friendly interface.

Rated 4 out of 5 stars (29)
13,748 users

Dictionary Switcher for Thunderbird

Toggles spelling dictionaries automatically or manually and displays the currently selected one in the status bar.
Now merged with Dictionary Switcher v1.3 for Firefox/SeaMonkey

Rated 4 out of 5 stars (26)
10,396 users

Finnish spellchecker

Finnish open source Voikko-spellchecker for Mozilla and needed libraries.

Rated 4 out of 5 stars (96)
8,168 users

WordReference Translator

Open a tab with WordReference's translation for the selected word. Through a floating link, or by pressing "D" key.

Rated 3 out of 5 stars (31)
7,931 users

Transliterator No Restart

As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.

Rated 5 out of 5 stars (76)
7,200 users

Babylon Dictionary Word Search

Find the definition for a selected word in a web page or an email.
Right click over the selected word, choose the option "Search in Babylon" and that's it! You will have a new window with the definition of the selected word.

Rated 4 out of 5 stars (43)
4,807 users

Right Encoding

Adds the Character Encoding menu to the context menu

Rated 5 out of 5 stars (18)
4,397 users

EHTip

Word translation in tooltip with English⟷Croatian dictionary already incorporated.

Rated 5 out of 5 stars (63)
4,379 users

Rikaichan Japanese-German Dictionary File

A dictionary file for Rikaichan.

Rated 5 out of 5 stars (1)
4,276 users

French Dictionary for Spelling

Supports also the Nighty browser! This is a French Spelling dictionary, for finding spelling mistakes.
Select a text in French appearing on any web page and get a spelling check for it immediately!

Rated 4 out of 5 stars (11)
4,177 users

AVIM

Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.

Rated 5 out of 5 stars (30)
3,850 users

abcTajpu

Type in accented letters, international characters or symbols into Firefox or Thunderbird, either simply by using a context menu (there being support for many languages), or quickly by keyboard macro (you can even define your own).

Rated 4 out of 5 stars (69)
3,659 users

Rikaichan Japanese-French Dictionary File

A dictionary file for Rikaichan.

Not yet rated
3,169 users