Language Support

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Quick Translator

The most lightweight and easiest translator. Translate between more than 80 languages with one click or a hot key. Translate from one word to a whole page.

Rated 5 out of 5 stars (468)
33,320 weekly downloads

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 (81)
2,583 weekly downloads

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)
2,226 weekly downloads

Rikaichan Japanese-English Dictionary File

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

Rated 5 out of 5 stars (5)
1,464 weekly downloads

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 (96)
1,307 weekly downloads

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 (24)
1,105 weekly downloads

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (6)
868 weekly downloads

EHTip

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

Rated 5 out of 5 stars (58)
748 weekly downloads

Rikaichan Japanese Names Dictionary File

A dictionary file for Rikaichan.

Rated 5 out of 5 stars (3)
427 weekly downloads

Todoist for Thunderbird

Todoist is a leading online task manager and we manage millions of todos! Todoist for Thunderbird makes it super easy to manage your todos and email directly from Thunderbird.

Watch a short video:
https://www.youtube.com/watch?v=VixEQJb5Qc0

Rated 3 out of 5 stars (16)
424 weekly downloads

Spanish Dictionary for Spelling

Select a text in Spanish appearing on any web page and get a spelling check for it immediately!

Seleccione un texto en español que aparece en cualquier página web y obtener una revisión ortográfica de inmediato!

Not yet rated
375 weekly downloads

Dictionary Switcher

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (167)
348 weekly downloads

AVIM

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

Rated 5 out of 5 stars (30)
291 weekly downloads

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 (75)
271 weekly downloads

English - English Dictionary

This is an English dictionary for looking up words in English.

Select a word using your mouse and find its meaning in English!

Rated 3 out of 5 stars (8)
266 weekly downloads

German Dictionary for Spelling- Wörterbuch

This is a German spelling dictionary, for finding spelling mistakes.
Select a text in German appearing on any web page and get a spelling check for it immediately!

Rated 4 out of 5 stars (6)
229 weekly downloads

French Spelling Dictionary

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 3 out of 5 stars (7)
213 weekly downloads

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 (41)
188 weekly downloads

Rikaichan Japanese-German Dictionary File

A dictionary file for Rikaichan.

Rated 5 out of 5 stars (1)
157 weekly downloads

Finnish spellchecker

Finnish Spellchecker

Rated 4 out of 5 stars (96)
157 weekly downloads