Who makes this Classifieds script?

[GK]

I'm looking to run this script on my site:
http://www.thirdgen.org/internal/classifieds/

If you guys know who makes it, leme know! Also, if you know of a easy to use Classifieds program, post her up! :)

[Epgs]

looks like it is homemade , no copyright script on the bottom