Buddymeeting is a new free and open-source web-based conferencing service which allows anyone to have an online meeting session with up to 25 people at zero cost.
Features include PowerPoint (and PDF) presentation support, video and VoIP, whiteboarding, screen sharing, text chat, and tele-conferencing.
Buddymeeting sports a clean and effective user interface, that is simple and intuitive to use.
Find out more: http://buddymeeting.com/
Via Robin Good