Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited
DigitalChalk - Online Training Software and Learning Management System (LMS)
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!
Unily - Unily is a cloud-based intranet solution designed by SharePoint consultancy BrightStarr.