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Google and yahoo are fairly useless these days for more and more searches :
I am in search of either free(ware) or open source software that can function as a chalkboard, a blackboard, and/or a whiteboard.

[seems like blackboard inc has a ridiculous patent that has curbed a lot of development in this area]

MS sharepoint and a lot of commercial groupware would be too expensive to deploy in low-budget school systems on the scale i’m desiring and for the most part have too many features that are not needed

what is mostly needed is the ability to group sketch/edit and thus collaborate from near or far on the board
whiteboard meeting comes close but the fact it requires skype eliminates it from contention

also some of the IM apps out there have some decent interactive sketching ability but afaik they only allow 2 people in a direct IM conversation to see and sketch the same image not a larger group of say 4 or 5 individuals

so any more suggestions?

Alva Quesenberry