Slack, Microsoft Teams, Facebook Messenger, Zenchat, Google Groups, Dialog Messenger, TidyHQ, GroupSpaces, Hack Chat, Whaller, Usenet.net, Astraweb, XS usenet, Ripcord, Pumble, Workchat, Wiggio, Nabble, Threads for Teams, Listeron, Ziggs, GroupServer, Gluu IO, Tribecube, BinTube Usenet Access, 6Tribes, My Town Circle are some alternatives to Fleep.