DViewPaint is no longer available :(
Features (v0.06 BETA):
-- 2D ANIMATION in the viewport
-- Background and Animation LAYERS
-- Use 3dsMax's KEYFRAMES system to MOVE, CLONE or DELETE drawings
-- Multiple modes of GHOSTING
-- Multiple brush sizes and colors
-- Unlimited level of undos ( Delete last stroke option )
Upcoming Features :
-- Unifom scaling of the Drawing to fit non-uniform scaling of the Viewport
-- ERASER BRUSH
Please help making DViewPaint a better tool by adding your feedback as comments ^_^