Try Dimdim - it is free, open source and entirely browser based. It’s also really, really easy to use.

Hi Larry,

Thanks for checking out Vyew. In addition to conferencing, desktop sharing and collaborating in real-time, meeting participants can access the workspace at their convenience. This aspect is great for posting assignments and letting students work in an always-on environment. The screen is a whiteboard called a VyewBook. You upload content into the VyewBook and give participants permission to access, augment and annotate the content with the pen, highlighter, text pad and other tools at the left of the screen.

Best regards,

Todd Lane
Marcom Director
Vyew