LAN Messenger, HCL Sametime, Feem, Vypress Chat, Softros LAN messenger, BigAnt Office LAN Messenger, Output Messenger, RealPopup LAN chat, Simple Chat, BORGChat, Bopup IM Suite, Secure copy, jMessenger, qchat, Banckle Enterprise IM, Bopup Messenger, Network Assistant, Kubeah Chat are some alternatives to Winpopup LAN Messenger.