Google Finance - Google Finance is a website focusing on business news and financial information hosted by Google.
Robinhood - Free stock trading service.
OptionsHouse - OptionsHouse is an online stock trading platform with an easy-to-use interface.
Ellevest - An investing platform built for women
TradeStation - Whether you trade stocks, ETFs, options or futures, TradeStation’s award-winning tools and...
Alpaca Data API - Free real-time stock market data API