SKYPE - www.skype.com/

ooVoo - www.oovoo.com/

MeBeam - www.mebeam.com/

PalBee - www.palbee.com

iChat - http://www.apple.com/macosx/features/ichat.html

Web Conferencing Application Review - http://www.voip-sol.com/6-best-free-video-conferencing-apps-services-tools/

Deinition: VoIP - http://en.wikipedia.org/wiki/VoIP

ooVoo vs. Skype - http://www.yeasir.com/blog/2008/05/15/oovoo-wont-replace-skype/

ooVoo Features - http://www.oovoo.com//features/

ooVoo Promotion - http://www.mefeedia.com/entry/my-oovoo-day-with-recap-long-format/8902222/