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Automatic Dictionary No Restart

Extension that remembers the language of the spellchecker used when composing and switches to it every time you write to that person.

Rated 5 out of 5 stars (19)
2,279 users
Updated July 13, 2015

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 (205)
229,872 users
Updated July 1, 2015

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (6)
10,315 users
Updated June 1, 2015

Kukkuniiaat

A Greenlandic spell checker for Mozilla products.

Not yet rated
28 users
Updated April 27, 2015

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)
2,592 users
Updated April 4, 2015

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)
81 users
Updated March 26, 2015

Zombie Keys (Multilanguage Keyboard)

Enter accents, diacritics, diaeresis, umlauts, ligatures etc. with keyboards of various countries (us,uk,ie,fr,it,ru,de,sv) - via easy to remember shortcuts or menu. Also supports all textboxes of the application (such as search, filters).

Rated 5 out of 5 stars (22)
1,315 users
Updated February 25, 2015

German Spell Check

Dies ist eine deutsche Rechtschreibprüfung, für die Suche nach Rechtschreibfehler.

Rated 3 out of 5 stars (7)
4,235 users
Updated December 14, 2014

CodeHighlight

highlight code in email.

Rated 3 out of 5 stars (1)
43 users
Updated December 10, 2014

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)
6,793 users
Updated December 9, 2014

Portuguese Dictionary for Spelling

Select a text in Portuguese on any web page and get a spell check for it immediately!

Rated 4 out of 5 stars (6)
325 users
Updated December 9, 2014

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)
3,457 users
Updated November 25, 2014

Mukparasi Korean-English Dictionary File

A Korean-English dictionary file for Mukparasi.

Not yet rated
27 users
Updated November 7, 2014

Mukparasi

A Korean popup dictionary based on Rikaichan
Requires the additional dictionary addon.

Not yet rated
26 users
Updated October 6, 2014

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 3 out of 5 stars (7)
3,507 users
Updated August 22, 2014

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 2 out of 5 stars (9)
6,123 users
Updated August 6, 2014

Right Encoding

Adds the Character Encoding menu to the context menu

Rated 5 out of 5 stars (17)
4,236 users
Updated July 29, 2014

Spanish Dictionary for Spelling

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

Not yet rated
2,484 users
Updated July 25, 2014

Persian transliteration No Restart

Helps transliterating Persian texts.

Rated 5 out of 5 stars (1)
23 users
Updated July 10, 2014

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)
5,704 users
Updated June 25, 2014