Robinhood - Free stock trading service.
Trigger Finance - IFTTT for the stock market
TradeStation - Whether you trade stocks, ETFs, options or futures, TradeStation’s award-winning tools and...
Senate Stock Watcher - Watch how US senators trade in the stock market
OptionsHouse - OptionsHouse is an online stock trading platform with an easy-to-use interface.
Scoop Markets - Market moving news, before it breaks 📈