WinMessenger
Easy to use & convenient WinPopup replacement that works in any Windows version
Vypress Chat
Set up chat sessions among the members of your network.
Vypress Auvis
Peer-to-peer instant messaging and files transfering for LANs/WANs/intranets
Vypress Messenger
Peer-to-peer instant messaging and files transfering for LANs/WANs/intranets