Melhor ferramenta para o português que testei até agora. Vale a pena e funciona bem com o Firefox.

requires a paid plan to use.

I think I lost some written text because of this extension - the text was there, but after submitting it in Teams, half of it was gone.
In jira comments it messed up words if I tried to correct them.

There is clearly a significant memory leak issue on Firefox. As a paid subscriber, I am no longer able to use it. Firefox freezes and becomes unusable.