Robinhood - Free stock trading service.
Ellevest - An investing platform built for women
SparkFin - Learn the markets for free, profit forever.
Alpaca Data API - Free real-time stock market data API
Stockflare - Stockflare helps anyone pick stocks, easily. Investing doesn’t have to be complicated.
StockTwits + Robinhood Integration - Zero commission trading directly from the StockTwits app