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.
ibis Paint X - Drawn with + ibisPaint
MediBang Paint - The official site for MediBang Paint, the free digital painting and manga creation software. You can download the latest version of MediBang Paint here, and get news and tutorials.
ColorMe - Visualize The CSS Color Function
Corel Painter - Corel Painter is media painting software.
Flamingo Animator - Flamingo Animator is the perfect app for anyone who wants to create their own animated cartoons.