Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited
HelpCrunch - HelpCrunch Live Chat: Turn prospects into customers, drive sales and improve retention with a rich toolbox combining modern live chat, in-app messenger, email marketing, CRM and marketing automation.
Ripcord - A desktop chat client for Discord and Slack
VdoTok - APIs for the new generation of messaging, video calls, and voice calls.
Ziggs - Smoothly Share Content Between Devices!
Skotty - Smarter online communication for professionals