Was working well for the longest time, but in the past month it's started messing up the corrections it does by deleting spaces and punctuation around the words being corrected.

it has started to delete spaces between words after corrections

I make a lot of errors, typos, and misspellings. LT helps me a great deal.

Only gave it 4 instead of 5 stars because it isn't totally FOSS.

Fajne!!!

works fine, but is heavy on performance

This extension is great! I bought the whole program, and it has been increasing my grasp of grammar. I'd give it 5 stars if it worked in more programs and websites.

хорошо помогает в копирайтинге

Pretty handy. Pretty good.

вполне неплохо работает

Muy buena herramienta.

Très bon correcteur à la volée. Il propose parfois des modifications qui ne sont pas adéquates, mais on a aussi un cerveau pour ne pas en tenir compte.

I have ProWritingAid Premium, which supposedly gives me the capabilities of this Add-on but I turned it off--will use it for large volume writing and editing--and bought the Pro version of LT instead for everyday use. It is really efficient on PC resources! That is a big deal for me. Apps that cause my PC to buffer or hang up kill my flow and productivity. I wished LT Pro had a writing level complexity rating, a la Hemingway Editor. The annual fee is not cheap either. My Lifetime PWA Premium license is a vastly superior deal. However, for efficient writing assistance and supervision, as you go, this is showing itself to be a standout tool.