eSignal 11. I can't say enough good stuff about it. It's the only one I've found that competently handles futures, options, stocks, and sub-penny fractions perfectly at the same time (the trade manager adjusts down to 1/100,000th of a point accuracy)...plus, I can integrate multiple brokers so I can pay by the share/contract with IB or by the lot with TD depending on what's cheaper.
Market Data 
Markets 
AI
