On paper it looks pretty good. They offer a FIX middleware piece that provides connectivity to various destinations, and handle all the tendious stuff, like supporting and maintaining the interface and getting it certified. Its available for.NET, Java and C++. Destinations include CME, ICE, TT, Interactive Brokers as well as various retail and institutional FX platforms. http://www.onixs.biz/test2/FIXEngines/directConnect/ I have browsed the docs, and it looks pretty straight forward. I dont know about the costs, but i guess its a viable approach for small outfits or individuals who dont have an entire IT department at their hands. Anyone has experience with this software? Regards, P.