PIC MONKEY
http://www.picmonkey.com/
SPASHUP
http://www.splashup.com/
SUMO PAINT
http://www.sumopaint.com/app/
SLIMBER
http://slimber.com/
QUEEKY PAINT
http://www.queeky.com/app
TEXTUREBITS
http://texturebits.blogspot.com.es/
PIXLR
http://pixlr.com/
SKETCHPAD 3.5
https://sketch.io/sketchpad/#