Telephony and Instant Messaging:
SightSpeed - Real-Time Video Messaging and Video Conferencing
Userplane Video Instant Messenger and Flash Instant Messaging Software – IM
Best Video Conferencing and online meeting software for PC and MAC
ICQ.com - Get ICQ instant messenger, chat, people search and messaging service!
Lite Free Video Conferencing software from iVisit for Windows
PCWorld.com - Messenger Plus! v3.01.94
PCWorld.com - MSN Messenger (9x-NT) v4.6.0071