http://www.intel.com/proshare/conferencing/products/

http://www.microsoft.com (Netmetting)

http://www.wpine.com (CU-SeeMe)

http://www.madge.com (Madge Networks)

http://www.pictel.com (picture Tel)

http://www.RADvision.com

http://www.telespan.com

http://www.videoserver.com

http://www.vtel.com

http://www.zydacron.com

http://www.adaptivemedia.com (Envision Enterprise)

http://www.precept.com IP/TV 1.6 Cisco

http://www.sgi.com WebForce MediaBAse

http://www.microsoft.com/netshow

http://www.real.com Real Networks

http://www.starlight.com StartLight Networks