Shtuff Chat - Free Group / Team chat with persistent history.
Tealfeed - A knowledge sharing platform to empower creators
JabbR - A chat application built with ASP.NET and SignalR.
Diem - Diem is a knowledge-sharing platform and digital safe space built for women and non-binary people.
Smarsh Instant Messenger - smarshIM Mobile is a free application download that requires a paid account on the smarshIM service...
Kifi for Teams - Knowledge sharing and collaboration for teams