It's the Latency, Stupid
Stuart Cheshire, May 1996.(Revised periodically) Copyright © Stuart Cheshire 1996-2001
http://www.stuartcheshire.org/rants/Latency.html
vmeet -- IETF remote participation meeting discussion
https://www.ietf.org/mailman/listinfo/vmeet
Similar university projects
Isabel is a multicast enabled, multipoint group collaboration tool for performing distributed congresses, classrooms or meetings over the Internet, which uses advanced floor control techniques
The Access Grid® is an multicast enabled ensemble of resources including multimedia large-format displays, presentation and interactive environments, and interfaces to Grid middleware and to visualization environments. These resources are used to support group-to-group interactions across the Grid.
Moviecast - Developing a Mobile Videoconference Solution for SIP-initiated Multicast Group Conferencing
http://www.realmv6.org/moviecast.html
Flash based webconferencing
http://code.google.com/p/openmeetings
http://www.dimdim.com (50 users 11.400 $ per year )
Subscription based webconferencing
Adobe® Acrobat® Connect™ Pro web conferencing software. Securely share presentations and multimedia right from your desktop, and get feedback from hundreds of participants — all using a web browser and the Adobe Flash® Player runtime, already installed on over 98% of Internet-connected personal computers.
http://www.adobe.com/products/acrobatconnectpro
http://www.webex.com ( 50 users 45.000 $ per year )
Commercial products ( communitys )
http://www.paltalk.com ( no Macintosh or Linux version )
http://www.ivisit.com ( from the founder of cuseeme Tim Dorcey )
http://www.sightspeed.com
http://www.maratech.com ( bought by google 2005 )
http://www.camfrog.com
http://www.jmeeting.com
MCU based multiconferencing ( hardware solutions )
http://www.radvision.com ( bought cuseeme 2005 )
http://www.polycom.com
http://www.cisco.com/en/US/netsol/ns669/networking_solutions_solution_segment_home.html
http://www.tandberg.com
http://www.lifesize.com
http://www.vcon.com