Simplesmente incrível.

Brings back the spell check support for multiple languages along with additional features that are of help. Great. (I used a builtin mechanism before but it doesn't work anymore since Ff80 with for instance MS web apps)

Corretor que realmente corrige e funciona com outras línguas também, meu inglês capenga agradece.

Only grammar checker that works with the latest Firefox versions.

Does the job. Gives no trouble. 👍

Спасибо, очень хороший корректор грамматики! Пользуюсь им и очень доволен. Рекомендую всем, кто его ещё не попробовал. Удобно пользоваться и облегчает написание правильных текстов.

Works better than any other grammar-fixer I've tried, helps a lot with typos and mistakes humans tend to overlook

a great add-on. I subscribe in order to get the grammar checking. I'm a native english speaker, I still find it very handy.

Muy buena la recomiendo