Slice Capital - Invest alongside top Angels and VC’s for $100
Robinhood - Free stock trading service.
CoinList - Build a diverse portfolio of pre-launch token investments
invstr - Investing for everyone (with fantasy $$$)
Spaceship Voyager - Investing with Spaceship Voyager is free under $5,000 and there is no minimum investment. Choose between Spaceship Index and Spaceship Universe.
M1 Finance - M1 helps you manage your money by automatically putting it to work in a customizable portfolio