Linguix is a fantastic lightweight plugin for Chrome that is very user friendly. The user interface is better than any of the other grammar / spell check apps. I really enjoyed using it primarily because it looks so beautiful. Although Linguix is not perfect, isn't that why apps come to AppSumo in the first place? To increase their user count and raise funds so they can get even better.

Linguix is a viable power competitor to Grammarly or ProWritingAid. I don't use Grammarly for plagiarism checks as I have a different software that automatically scans my content for plagiarism. If you don't need grammar software doing plagiarism checks, then grab as many Linguix codes as you can afford.

One note: one license = one install. Doesn't necessarily mean user. I hope Linquix implements user management soon.