RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
MyChat - Secure instant messenger for any network
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Bopup IM Suite - Organize secure messaging system and communicate instantly via self-hosted IM server.