AbleTrend $7190 (lifetime)
AmiBroker $499
ATAS - Over Flow Trading $40/month
Bracket Trader $100 [but defunct?]
Button Trader [defunct?]
Cool Trade $4995 (three year license)
Ensign Software $499 (annual)
eSignal $4,258 (Elite) (annual)
Investor/RT LinnSoft $125/month
Medved Trader $240 (Premium) (annual)
MotiveWave $99/month (Pro)
Ninja Trader $1499 (lifetime)
Quantopian [looks defunct? no product?]
Sierra Chart $56/month (top package)
TradeIdeas $2136 (Premium)
Trade Navigator $1495 (Platinum)
XLQ (Q-Matix) $299