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.
YouiDraw - Draw and Design Vector Graphics, Logo, Text, icon in the Cloud.
Artrage - A simple but lovely natural media painting and sketching program.
DrawBerry - All the features of other vector editing applications such as Adobe Illustrator or Inkscape, in a...
Procreate - Procreate is the most powerful and intuitive digital illustration App available for iPad®.
Ludigraphix - Vector drawing tool with shapes defined by points that can be shared with other shapes.