Do you mean PhoTags?
Are you sure you don't mean "PhoTags", instead of PhotoTags? I Googled "phototags photo editing software" and got "showing results for PhoTags photo editing software". I have no idea if PhoTags is any good, but from the description, it's seems to be exactly what you were originally looking for. It's not free, but has a free trial. Also, the same Google search shows other free alternatives.