Gliffy is a powerful online HTML5 floor plan maker. It allows users to create and collaborate on residential and business floor plans with ease. Use the arrow keys to move the ball and draw a blueprint. To lift the pen, press space, and to put it back down, press space again. To lighten. SmartDraw's blueprint maker is much easier to use than traditional CAD software costing many times more. Yet it offers some amazingly powerful features.