Slack - A messaging app for teams who see through the Earth!
Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited
Slack for Mac - A new, improved Slack desktop app for Mac
Ripcord - A desktop chat client for Discord and Slack
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Ziggs - Smoothly Share Content Between Devices!