EServer Web Conferencing is an open source web conferencing system for collaboration and teaching over a distance.
It supports sharing of slides (PDF and any document readable by OpenOffice, including Microsoft Word and PowerPoint files), webcams, whiteboard, chat, voice over IP (using FreeSWITCH), and presenter's desktop. It can record and playback sessions (slides, audio, and chat), runs on Mac, Unix, and PC computers, and is supported by a community of developers that care about good design and a streamlined user experience.
If you'd care to learn more about the software which drives this system, you may watch instructional videos available from BigBlueButton.org.
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