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SpanishTrans Requires Restart

This is a very simple, complete, fast and clean dictionary, which allows you to highlight an English word on the page that you're visiting and get immediately the Spanish translation...

Rated 4 out of 5 stars (21)
1,454 users

Yamli Smart Arabic Keyboard Requires Restart

Write Arabic anywhere on the web using Yamli's Smart Arabic Keyboard. Also use Yamli's powerful Arabic search directly from the browser.

Rated 4 out of 5 stars (37)
3,098 users

FoxVox Requires Restart

FoxVox will speak any text you highlight in a web page. FoxVox can also create audiobooks in mp3, ogg, and wav formats. You can now easily turn your blogs and articles into podcasts.

Rated 4 out of 5 stars (44)
4,233 users

Locale Switcher Requires Restart

Displays a menu item for switching the application locale.

Rated 4 out of 5 stars (26)
45,240 users

Portail lexical du CNRTL Requires Restart

Une barre d'outil pour le portail lexical du CNRTL

Rated 5 out of 5 stars (2)
2,617 users

Grammalecte [fr]

French grammar checker.
Included: conjugation tool, lexicographer, text formatter and spelling dictionaries.

Rated 5 out of 5 stars (6)
3,819 users

Instant Translate: Select and Translate

Translation, text-to-speech, transliteration on pages and in the pop-up for 100+ languages.

Rated 4 out of 5 stars (26)
6,799 users

One-Click Translate Page

A basic Mozilla Firefox Add-On. Press the Translate button and the current page will open in Google Translate in your chosen language.

Rated 4 out of 5 stars (1)
1,809 users

Grammarly for Firefox

Grammarly’s free spelling and grammar checker ensures that everything you type is easy to read, effective, and mistake-free. As you type, Grammarly underlines spelling mistakes and grammatical errors and helps you fix them on the fly.

Rated 3 out of 5 stars (41)
101,203 users

Speechify

An add-on to convert your text to speech

Rated 5 out of 5 stars (16)
2,134 users

French Dictionary for Spelling Requires Restart

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 (9)
4,807 users

Greek Translator Requires Restart

Translates English to Greek and vice versa.

Rated 4 out of 5 stars (7)
1,065 users

Dictionary Switcher Requires Restart

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (178)
17,460 users

Zotero bibliography Locale Switcher Requires Restart

This add-ons add a sub menu in Zotero to change the bibliography export locale.

Rated 5 out of 5 stars (4)
4,671 users

Text to Voice Requires Restart

https://en.wikipedia.org/wiki/Text_to_Voice_(Firefox). TTS gives Firefox the power of speech. Select text, click the button on the bottom right of Firefox window and this add-on speaks the selected text for you. Audio is downloadable.

Rated 4 out of 5 stars (182)
25,757 users

WordReference Translator Requires Restart

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 (33)
6,178 users

Finnish spellchecker Requires Restart

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

Rated 4 out of 5 stars (98)
7,887 users

Rikaichan Japanese-French Dictionary File Requires Restart

A dictionary file for Rikaichan.

Not yet rated
2,872 users

Euskalbar Requires Restart

Basque dictionaries and other tools (corpora, spellcheckers, search engines...). Euskalbar is a Firefox toolbar that helps translating words from Basque to other languages and from other languages to Basque.

Rated 5 out of 5 stars (29)
3,040 users

Life Science Dictionary Tool Requires Restart

Life Science Dictionary Tool is a mouseover dictionary that translates life science terms with vast numbers of English and Japanese terms available with information from life science dictionary project (http://lsd.pharm.kyoto-u.ac.jp/ja/index.html).

Rated 4 out of 5 stars (9)
4,960 users