ZoomCall Pro VideoPhone
Easy to use, small (1.6Mb - installed!) videoconferencing software, works with most cameras. Improved network support allows to connect when both clients are behind firewall. Features face detection, camera noise reduction, multiconferencing (up to 6 persons), auto bandwidth detection. Can work through HTTPS proxies. Downloadable skins, chat, address book. Low bandwidth requirements. Uniquie video compression techniques on MPEG4+ level.