Excelente complemento, aplica en casí en todas las páginas

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