>>83132490addtnl info: magma's up to 4096x4096 now, something like 60? free active layers at a time, pastes, tablet support, semifancy brush controls, exports, perms, etc
seemed to work well for the ones I participated in, and haven't messed with whiteboard, but it looked a little more primitive?
might be worth considering next time you want to do one, just carefully read the perms before posting