I want to use some collabartive white board for my project in which users can chat and at the time 3-4 pople works on the same board etc.
I want open source white baord for that purpous so that I can modify code according to me .
If any can tell me which one is better to use.
Silverlight whiteboard or flash white board .Please detail me with reasons which technology is better for this purpous.
It will be of great help if any one can provide link to open source collabarative whiteboards.