ddrgen Development Version
By popular demand, there’s a new development snapshot of ddrgen out (2006-06-10), after about a year since the first release. It has some bugs that need ironing out, but there’s some code there which is a vast improvement over 1.0.0. It supports game scanning too, however I’d recommend disabling it in larger networks, due to the very long time it takes to do it, with lots of firewalled computers.
You can read all about it on the ddrgen page.