Robinhood - Free stock trading service.
The AlphaFlow Exchange - E*Trade of P2P / Real estate investing
Rally Rd. - Invest in blue-chip classic cars like stocks
Peerstreet - Finances real estate through a form of crowdfunding.
Freetrade - Invest in stocks & ETFs for free, get started in seconds.
RealtyShares - Real Estate Investing in 20 Minutes