I am very satisfied with SEE. It is a fast & lightweight tool for our textual collaboration. Just see the rating: just five stars.

But even beyond that: I reported a strange crash of SEE (which happens very rarely to me) just a few days ago - it was one the these "unreproducible" issues ;-) I've received a message from the developer the same day and they managed it to fix this crash in no time!

That's how it should be. Guys, I appreciate your work!