Chat Application By kumarathurai Mar 31, 1996 ICQ ICQ Mar 9, 1998 Yahoo! Messenger Yahoo! Messenger Jul 22, 1999 Windows Live Messenger MSN Messenger Discontinued 2012 Mar 31, 2003 Camfrog Camfrog Aug 1, 2003 Skype Skype Mar 31, 2007 ooVoo ooVoo
