Robinhood - Free stock trading service.
Slice Capital - Invest alongside top Angels and VC’s for $100
Sumday - Investing how you least expect it
CoinList - Build a diverse portfolio of pre-launch token investments
Matador - Free investing + Social feed of trades + 2.5% on your cash
Spaceship Voyager - Investing with Spaceship Voyager is free under $5,000 and there is no minimum investment. Choose between Spaceship Index and Spaceship Universe.