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