[notouch]

I think everyone else apart from TS refers to it as the DOM. I can't see how anyone could trade futures without it. Interactive Brokers has there own BookTrader and lots of third party front-ends like ButtonTrader and BracketTrader. Also there's a free one from eSignal called VisionTrader that is compatible with different brokers. X Trader is for pros and is the most expensive but you can get it for free (apart from slightly higher commissions) with Global Futures and Velocity Futures.