Language Support


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)
5,490 users

Dictionary Switcher

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (170)
24,238 users

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:

Rated 3 out of 5 stars (16)
6,780 users

French Dictionary for Spelling

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 (10)
3,708 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)
7,449 users

nynorskvg No Restart

Byter ut vg med nynorskvg. Vil leggja til fleire sider i framtida.

Switches with

Rated 5 out of 5 stars (1)
2 users

Mukparasi Korean-English Dictionary File

A Korean-English dictionary file for Mukparasi.

Not yet rated
27 users


CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.

Rated 5 out of 5 stars (23)
685 users

Rikaichan Japanese-Russian Dictionary File

A dictionary file for Rikaichan.

Not yet rated
909 users

Zhong Wen

Mouse over a Chinese character to find out it's meaning. A popup will appear showing the 'Pinyin' pronunciation, the simplified character form, and the English translation. You can customize what parts to show on the preferences window.

Rated 4 out of 5 stars (20)
889 users


即时在线汉英互译 - Instant Online Translator (Chinese-English)

Rated 5 out of 5 stars (1)
49 users

Bosnian spell checker

This is a comprehensive spell checker that contains more than 300 000 words of the Bosnian language.

Rated 5 out of 5 stars (1)
23 users

Russian spell check

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

Rated 4 out of 5 stars (4)
132 users

Indian Language Transliterator

Indian Language Transliterator (developed at IIIT Hyderabad, India) is a Mozilla Thunderbird Add-on, developed to enable Thunderbird users to compose and send messages in 10 Regional Indian Languages, using their regular QWERTY keyboard!!!

Rated 4 out of 5 stars (1)
50 users

Sztakidict SZTAKI Szótár a középsõ ujjban

Online Hungarian<->English dictionary by SZTAKI based on Jaap A. Haitsma's Dictionary Search 0.4
Modified by Danidek to be installable for Firefox 4.0 and later

Not yet rated
573 users

yangben dictionnary

spell check for Yangben Cameroun

Not yet rated
14 users


A Greenlandic spell checker for Mozilla products.

Not yet rated
31 users


Compose messages Right-to-Left or Left-to-Right. Unlike other addons which change the direction of typing of the whole message, this addon allows you to control the direction of an individual paragraph.

Rated 4 out of 5 stars (10)
18 users

KHANDBAHALE.COM Marathi Spell Checker.

KHANDBAHALE.COM Marathi Spell Checker. World's first ever spell checker for Marathi. मराठी स्पेल चेकर
# How to Use?
= Right Click to red marked misspelled word to correct it.
- - a free multilingual dictionary!

Rated 5 out of 5 stars (1)
10 users

Dictionary for recipient No Restart

Sets the spell check dictionary based on the first recipient

Not yet rated
42 users