OptionVue - Options trading & analysis software provides professional-level analytics, real-time quotes, historical data, custom trade modeling, charting, tracking, and much more
TradeStation - Whether you trade stocks, ETFs, options or futures, TradeStation’s award-winning tools and...
Entrade - Best Commodity Trading, Transaction, and Risk Management (CTRM)
OptionsHouse - OptionsHouse is an online stock trading platform with an easy-to-use interface.
Questrade - Questrade IQ Mobile is everything you need to trade stocks - right in the palm of your hand.
Robinhood - Free stock trading service.