http://web.archive.org/web/20140101000000*/http://www.paperu...
I don't know if you can find the code through there, but I'm pretty sure he had made it free. I think spreads is a bit newer.
Edit: Found some more info. It did indeed use Scantailor in the backend. His SW was more of a Web based frontend to all the parts. You can see a video demo of it here:
https://www.youtube.com/watch?v=Ad7aFYdbDos
Start at about 4:40.
The source is here: