Xloadimage is a utility which will view many different types of images under X11, load images onto the root window, or dump processed images into one of several image file formats. A variety of options are available to modify images prior to viewing. Ownership and Commercial Use Xloadimage is covered under a modified version of the MIT X Consortium copyright with all of these functions, thereby allowing full freedom with the code so long as the copyright notices remain intact.
All contributions have similar notices.
Commercial sites are welcome to use the code even without special permission, licensing or royalty fees. It's unlikely that I would ever prosecute someone for neglecting to follow the terms of the copyright, but your lawyers may disagree.