Grammarly

https://www.grammarly.com/1
https://twitter.com/Grammarly?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor
https://www.facebook.com/grammarly/
https://en.wikipedia.org/wiki/Grammarly
https://twitter.com/grammarly?lang=en

Videos
https://www.youtube.com/watch?v=azJKhrTT1Ao
https://www.youtube.com/user/TheGrammarly