Add-ons
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Check your emails for spelling and grammar issues76,474 users -
The best Translator for Thunderbird!
Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译58,393 users -
This extension is based on László Németh's Hungarian Dictionary8,736 users -
Australian English Dictionary for Mozilla applications.8,076 users -
![Icon for Grammalecte [fr] (for Thunderbird)](https://addons.thunderbird.net/user-media/addon_icons/809/809689-32.png?modified=1602750472)
French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.6,963 users
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Word translation in tooltip with English⟷Croatian dictionary already incorporated.0 users -
Look up Japanese words with the hover of a mouse.
After enabling the add-on from the toolbar (or press Alt+R) simply hover over Japanese text and a popup displays corresponding dictionary definitions.231 users -
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.11 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.0 users -
Ћирилично/латинично пресловљавање, виртуална ћирилична тастатура - Serbian Cyrillic/Latin transliteration and Virtual Cyrillic keyboard0 users -
An easier management of the user interface language28 users
Recently Added See all »
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Translate the message you read, in place: bilingual or translation only. Three tiers at once: offline dictionary, machine translation (Google, DeepL, Baidu, Bergamot…) and 22 AI services; AI summary and text in images. Data goes only where you pick.0 users -
Free, open-source spelling and grammar checker for your emails, in English and French. Underlines your mistakes as you write and fixes them in one click. 100% local: your messages never leave your computer.2 users -
Smart semantic voice dictation inspired by Google Rambler: removes filler words, auto-corrects on the fly, and formats clean emails right under your cursor in Thunderbird.2 users -
Automatically switch compose spellcheck dictionaries using fast Markov-style language detection.6 users -
Underlines the mistakes a LanguageTool server reports in the compose window. You choose the server, and nothing is ever sent to any other third-party service.6 users -
Insert any of 682 accented letters into a message as you write it, from a searchable popup in the compose window. Works offline: nothing is sent anywhere and no data is collected.3 users
See all 129 extensions in Language Support »
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