OpenToonz is an animation program that is a free software version of Toonz, the animation software used by Studio Ghibli, amongst others.
MediBang Paint is a lightweight software for illustration and making comic books on Windows and Mac OS.
MediBang Paint Features
PaintTool SAI is high quality and lightweight painting software, fully digitizer support, amazing anti-aliased paintings, provide easy and stable operation, this software make digital art more enjoyable and comfortable.
PaintTool SAI Features
ibis Paint is an easy yet powerful drawing app made with tools for sketching manga right at your fingertips.
ibis Paint X Features