When I finished my undergrad a few years ago, we were relying heavily on GroupMe chats, with the occasional Slack and one or two LinkedIn groups mixed in. Discord was just starting to exit the gaming sphere and hit the mainstream though. I'm willing to bet it's absolutely dominating the space now.
zadikian|9 days ago
Mixtape|9 days ago
It's worth noting that GroupMe sticking around was honestly probably a byproduct of my own circles and the specific campus culture to a certain extent.