Looking for E-card Freeware

I’d like to run web greeting cards from my site. It would be much simpler with some kind of software but so far I haven’t found anything freeware that lets you do it from your site. There are a few which run like affiliates. I really don’t want to promote someone else or use their art/ graphics. I have my own in mind.

It will be cute once I stomp on all the bugs.