John Olinda Our school uses Slack, and the future of Slack is of course something that concerns me. Native, closed apps tend to be so much better though that it is hard to justify using open but clunkier standards. @sublevel has been a pleasant exception to this though. venturebeat.com/20...

Mark Dain How is sublevel an exception? Sublevel is closed source

John Olinda Sorry, I meant that it is not native but still very nice to use. Didn't realize I had conflated two ideas there.