was good once, but for whatever reason isn't working for me anymore in FF, no settings are saved and doesn't appear anymore in any text or spelling corrections etc.
Settings aren't saved anymore no matter what I do.
Gonna fully remove and reinstall and if it still doesn't work gonna look for something else, thankfully there seem to be many competitors in this field.
Not sure why it seems to be working for everybody else still but not for me, based on the reviews by others. Worked fine in the past but then just stopped.

Excellent piece of software. It is much faster and cheaper than Grammarly, without any of the bugs.

LanguageTool is extremely useful to help in writing. It helps me to do a better everyday.

Excelente ferramenta que ajuda no dia a dia, para corrigir erros de ortografias diretamente no momento que estamos escrevendo os textos, sem ter que ficar copiando e colando e outros corretores...
Isso ajuda muito, muito mesmo.

Me parece genial¡

Muito bom, funcional.

AMAZING, BEST GRAMMAR CHECKER OUT THERE, THX BRO SO USEFULL

It's perfect for English, but for my language "Arabic" it sucks, and I can't even disable checking in Arabic and keep giving false positives and wrong destructive suggestions even I've added English as the only language for detection and checked the box underneath, but still annoying me with Arabic false errors, and wrong suggestions, please fix!

its ok for basic spelling mistakes but has real difficulty with some words people would spell phonetically I'm dyslexic so I spelled definite like this defenate. The add on offered me two options to correct the mistake defecate and def enate. I'll forgive defecate as the app could have thought it was a mistype but to not offer definite when I typed it in google and the correct spelling was the first thing google offered. Also loads of names of places are flagged as a mistake Shinjuku for example. I wouldn't recommend this add on in its current state.

Un dels millors correctors que he provat mai!!

Personally I hated this extension and uninstalled it. The grammar checking function is extremely irritating (it doesn't seem to get the idea of casual English where you don't necessarily want to have loads of commas everywhere) and there doesn't seem to be a way of permanently disabling it. It also constantly offers me unwanted style guides for "improving" the style of my English (by upgrading to a paid version). This is probably fine if you are writing English as a second language, but it isn't suitable for native speakers wanting to catch awkward spellings or typos.