is a stable, legacy-adjacent version of the lightweight painting software developed by Systemax Software Development . While the developer has shifted focus to the Version 2 Technical Preview , version 1.2.5 remains a popular choice for digital illustrators who prioritize its iconic brush feel and minimalist performance. Key Features and Workflow
: Requires a minimum of a Pentium 450MHz CPU and 1GB of RAM for modern Windows versions. painttool-sai-1-2-5
: Supports both raster and linework (vector) layers. You can use standard blending modes, clipping groups, and layer masks to organize complex compositions. Specialized Tools : is a stable, legacy-adjacent version of the lightweight
: Includes pressure-sensitive vector tools (Pen, Curve, Line) that allow you to edit paths and line weight after drawing. is a stable