I've been using the Grammarly plugin for Safari for a long time. When you print, the program underlines mistakes and immediately corrects them when you click on the word (it's convenient). In the free version, the service is limited to "simple" errors - spelling and punctuation. But still, some speech errors are also corrected. Recently, I noticed that the program loads the system. There was an idea to abandon it, but the developers have partly solved the problem after the release of a new plugin a couple of months ago, but unfortunately not for long. Sometimes freezes happen. Sometimes the program offers incorrect fixes (but fortunately, it does not automatically fix anything by itself). So I would be happy to try some other option. Languagetool - why not?