An excellent tool with a lot of grammar, sentence structure and style tips as well!
The reason why I gave it a 4/5 was because I type Dutch and German a lot and this add-on has limited support for compound nouns in these languages. (although it does support them far better than the browser's spellchecker does by itself)

лучший корректор в мире!

Though not perfect, I'm getting to like it more and more. I love how it offers you the correct solution by just hovering over the error word. I had the Basic version before and, I hope, now with the extended version even those small issues can be fixed. Regardless I like it very much, and in a way, it does make come across as smarter.

very bad performance. high cpu usage even on static page background tabs with addon enabled

addon itself is useful

Me gusta. Trabaja muy bien y ayuda a mejorar la ortografia.

Ich bin sehr zufrieden mit LT. Es hat mir schon sehr oft geholfen, und wenn ich korrekturlesen lasse werden selten noch Fehler gefunden.

Great addon - only the blue checkmarks right of pretty much every paragraph of text are kind of annoying and clutter the writing process.

Love this! It catches all those "simple" typos that we all tend to overlook (until we re-read read it a week later).