Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
351,622 users
Arabic spell-checking dictionary
Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.
26,690 users
Hindi Spell Check
Once installed, visit the google input page... https://www.google.com/intl/hi/inputtools/try/
99 users
PCD Title Spell Check
Add spell check functionality to the title field in PCD. After installing this add-on, misspelled words within the PCD title field will be highlighted with a red squiggly line underneath.
72 users
Hebrew spell-checking dictionary (from HSpell)
Hebrew spell-checking dictionary for Firefox and Thunderbird. Generated from data of the HSpell project version 1.4, and distributed freely under the AGPLv3.
4,201 users
SpellCheckAnywhere
This extension allows you to make spellcheck work on whole page body.
58 users
Lithuanian spelling check dictionary
Lithuanian spellchecking dictionary for Mozilla applications, maintained by the ispell-lt project. Included by default in Lithuanian localized versions of Mozilla software.
8,134 users
Oxford English Spellchecker
A spellchecker for Oxford English.
6,644 users
Hindi Spell Checker
This is a real time spell checker for Hindi, supported on Firefox, Thunderbird, and Seamonkey.
3,957 users
Slovak spell checking dictionary
Slovak spell checking dictionary for Mozilla applications (based on the "open-source" dictionaries by Zdenko Podobný).
9,376 users
Lojban spell check dictionary
Spell check dictionary for Lojban.
6 users
Greek spellchecking dictionary
Greek spellchecking dictionary Mozilla (Firefox- Thunderbird- Seamonkey)
18,817 users
Medical Spell Checker with OpenMedSpel
OpenMedSpel for Mozilla Firefox is free and open source medical spell checking dictionary that includes nearly 50,000 medical terms ranging from abdominis to zygomatic.
174 users
Finnish Spellchecker
Finnish spellchecker dictionary for Firefox, Thunderbird and SeaMonkey .
359 users
United States English Spellchecker
This dictionary is no longer maintained. Use this dictionary instead.
13,501 users
Polish Spellchecker Dictionary
Polish spell-check dictionary for Firefox, Thunderbird and SeaMonkey.
76,340 users
Persian Dictionary
Persian dictionary for spell checking
15,248 users
Odia Spelling Checker
Check Odia spelling and suggest modification.
47 users
Lingala spell checker (Hunspell ln-CD)
Add-on for spell checking Lingala text.
72 users
Xhosa spell checker
Your Xhosa spell checker allows you to check spelling in Xhosa and avoided typing errors in Firefox and Thunderbird. Now you don't need to see your Xhosa text underlined in red, allowing you to be proudly South African.
114 users
Typeright: Grammar & Spelling Checker
Check your texts for grammar, spelling, or punctuation mistakes. Polish up your writing with style and synonym suggestions!
151 users
Telugu Spell Checker.
Telugu Spell Checker
352 users
Grammarly: AI Writing and Grammar Checker App
Improve your writing with Grammarly's assistance. Get spell check, grammar check, and punctuation check in one tool. Real-time suggestions for improving tone and clarity help ensure your writing makes the impression you want.
788,707 users
Kannada Spell Checker
Kannada Spell Checker
279 users
Slovar za slovenski jezik
Spell-checking dictionary for the Slovene language
4,629 users