The program allows users to open multiple documents at the same time, drawing canvas can be configured, mirror the drawing view without mirroring the actual drawing and additional options and customization. PaintTool SAI (Easy Paint Tool SAI) is a lightweight yet high quality & powerful raster graphics editor and painting software from SYSTEMAX. It is full offline installer standalone setup of PaintTool SAI free download with the free for x32/圆4 Bit version. PaintTool SAI Free Download Latest Version for Windows. The bundle identifier for this application is PaintTool. This software for Mac OS X was originally produced by Porting Team. You can launch PaintTool SAI on Mac OS X 10.5 or later. PaintTool SAI 2.5.6 for Mac can be downloaded from our website for free.