Robinhood - Free stock trading service.
My Charity Change - Round-up daily transactions & donate to charities
Bux - Casual stock trading - thumb swipes only
4thWall - A free Google Chrome extension that raises money for charities while you stream shows and movies right on your favorite websites.
Contora - Alternative data on the companies activity on the web for retail traders
Hedado - Donate like a boss with Hedado!