Odkazy 

Adobe www.adobe.cz

Adobe Photoshop www.adobe.com/cz/products/photoshop.html

Adobe Illustrator www.adobe.com/cz/products/illustrator.html

Adobe Photoshop (Wikipedie) cs.wikipedia.org/wiki/Adobe_Photoshop

Adobe Illustrator (Wikipedie) cs.wikipedia.org/wiki/Adobe_Illustrator

GIMP www.gimp.org

GIMP (Wikipedie) cs.wikipedia.org/wiki/GIMP

CorelDRAW www.coreldraw.com/cz/product/coreldraw

CorelDRAW (Wikipedie) cs.wikipedia.org/wiki/CorelDRAW