Digital Watermarking
editI removed your edit to the article because of WP:COI (conflict of interest) and also because Wikipedia isn't a directory for software or online tools.
I understand these reasons. But in this way you make Wiki incosistent. Here are few precedents that says "software directly linked to to the topic might be noticed". Btw I speak about invisible watermarking - tool named Sign My Image. Just have a look to the software wab page and you will see. http://www.adptools.com/signmyimage