Epic Pen - A windows tool for drawing over your desktop and applications
miniPaint - Online graphics editing tool use HTML5 technologies like Canvas, Offline support, Drag and Drop.
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
RealWorld Paint - RealWorld Paint is an free portable image/photo/animation editor.
PaintTool SAI - Learn to draw in different ways.
Ultimate Paint - Ultimate Paint is a full-featured 32-bit Windows graphics program for image creation, viewing and...