Thinkorswim Mobile - Thinkorswim Mobile app features options so users can get all their desktop trading data at the palm of their hands to invest in the stock market or take their money out of the stock market.
Robinhood - Free stock trading service.
Sumday - Investing how you least expect it
Alpaca Fractional Trading API - Commission-free API to trade & invest for as little as $1
Slice Capital - Invest alongside top Angels and VC’s for $100
Stonksfolio - Gain insight into the performance of stock & ETF investments