Smart-Save by Stash - Save your spare cash, automatically.
Binance - Cryptocurrencies exchange platform
Axos Invest - Axos Invest is a stock trading and investment company that allows you to invest, trade, and grow your money by investing in the stock market.
Uphold - Move, convert, transact and hold any form of money or commodity. Instantly, securely and for free.
Sarwa - Sarwa is an online investment platform built by and for millennials.
Ripio - This exchange has very few options, however, it's one of your best options if you are in a South American country which is not supported by Coinbase.