Simply Wall Street - Easy stock and portfolio analysis
Robinhood - Free stock trading service.
Options Worth - Find out what your stock options are worth
TradeStation - Whether you trade stocks, ETFs, options or futures, TradeStation’s award-winning tools and...
Gradement - Scores and factors for your DIY stock research
OptionsHouse - OptionsHouse is an online stock trading platform with an easy-to-use interface.