The free GNU Image Manipulation Program enables you to enhance your image files. Although GIMP does not include a diamond texture option, as of June 2012, experiment with digital patterns, paint ...
The free and open source photo-editing program called GIMP (GNU Image Manipulation Program) is a nice alternative to the subscription-based or boxed versions of its competition (including PhotoShop).
GIMP started as a semester project by two fellows at the University of California in the year 1995. In its initial days, it was called General Image Manipulation Program, but later, got renamed to GNU ...