FotoSketcher - Turn photos to paintings, drawings and sketches. FotoSketcher is a 100% free program to turn your photos into beautiful art, automatically.

RealWorld Paint - RealWorld Paint is an free portable image/photo/animation editor.

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.

miniPaint - Online graphics editing tool use HTML5 technologies like Canvas, Offline support, Drag and Drop.

Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

JugiPaint - JugiPaint is a painting software with diverse tools for various types of illustration work.