It's an in-house engine and it's currently being ported to LLBLGen Pro v2 and ASP.NET 2.0/.NET 2.0. It will then be given for free / open source as an LLBLGen Pro v2 example application to our customers and others who want to see the power of llblgen pro in action
(It currently runs for 80-90% on llblgen pro v1.0.2005.1 code and for the rest on llblgen 1.21 code)