Binance - Cryptocurrencies exchange platform
Smart-Save by Stash - Save your spare cash, automatically.
Uphold - Move, convert, transact and hold any form of money or commodity. Instantly, securely and for free.
Unifimoney - The refreshingly new way to manage your money, make your money work for you not the bank.
Satoshi Tango - This is a good exchange if you are outside of the area supported by Coinbase, such as South American countries, especially Argentina.
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.