I've been using LanguageTool for a few weeks now and have found it to be incredibly helpful. My emails, Tweets, and everything have been significantly improved thanks to its unintrusive and intuitive UI. Definitely recommend!

Хорошее дополнение, очень помогает.

This extension really helps me a lot! I'm grateful that it's available for us grammar challenged folks. Thank you devs for this wonderful tool!

Multi language perfection!

At last a spell checker that works.

Surpreendente! Obrigado por adicionar a língua portuguesa.

recomendado, excelente.

Este Add On de Firefox es el paraíso para los que no tenemos buena ortografía, lo recomiendo 100%