Brinckmann & Associates - - Develops turn-key applications for video conferencing kiosks, multimedia and web sites.
eAuditorium by NetDIVE - - Java client/server system for scalable web based organized meetings. Controlled communication for distant learning, talk shows, and live auctions.
Ekiga - - An open-source VoIP and video conferencing application for GNOME. Features, screen-shots, documentation, download, and details of how to contribute to the project.
visionGS - - Free webcam software running on most Win32 platforms. Publish images live to the Internet using the ftp protocol or the VisionGS http server with real-time video streaming support.