This appears to be software aimed at retail marketmakers to manage their risk and offset positions to banking partners rather than a broker.
JDFX have 2 products. One is for brokers (Kontrol) and one for traders (ITP). I have used the demo version of the ITP package and have a friend using it live. The interface is very average but the fills during market hours are incredible. Frequently less and half a pip and extremely fast. Unfortunately they appear to have a very very high minimum requirement for funding an account so it may be a little while before I can use their system live! The day they have a lower account minimum (even 10k!) I will open up with them.