Coinbase
Coinbase is a digital currency exchange headquartered in San Francisco, California. They broker exchanges of Bitcoin, Bitcoin Cash, Ether, Ethereum Classic, Litecoin, Tezos, and many others, with fiat currencies in 32 countries, and bitcoin transactions and storage in 190 countries worldwide.
Gemini
Gemini Trust Company, LLC (Gemini) is a digital currency exchange and custodian that allows customers to buy, sell, and store digital assets. It is a New York trust company that is regulated by the New York State Department of Financial Services (NYDFS) was founded in 2014, by Crypto Pioneers and Institutional First Movers for Money Managers Cameron and Tyler Winklevoss.
Binance
Binance is a cryptocurrency exchange that provides a platform for trading various cryptocurrencies. As of January 2018, Binance was the largest crypto
exchanges in the world in terms of trading volume. Binance was found by Changpeng Zhao, a developer who had previously created high frequency trading software for the Tokyo Stock Exchange.