Top 5 of exchange platforms
1. Coinbase
    Coinbase is often the first platform that comes to mind when the best ones are discussed. Currently, Coinbase supports mainly Bitcoin, Litecoin, and
    Ethereum. There are indications that they will add other altcoins soon. It is extremely easy to use and the fees are much lower than the fees of similar
    platforms.
2.CEX.IO
   Often compared to Coinbase, CEX.IO is a platform that started as a cloud mining service and Bitcoin exchange but pivoted exclusively to exchange. It
   currently supports Bitcoin, Bitcoin Cash, Ethereum, Zcash, and Dash.
3.Poloniex
   Poloniex is a platform full of controversies and red flags. The users are constantly complaining about the bad customer support and prolonged withdrawal
   periods.
4.Kraken
   Kraken is Founded in 2011 and is one of the first exchange platforms for cryptocurrencies. It is a currency popular mainly in Europe but also in the rest of
   the world. It supports many cryptocurrencies and it accepts USD, CAD, EUR, JPY and GBP as fiat currencies.
5.Binance
   Founded in 2017, Binance is the youngest cryptocurrency exchange company that is currently located in Hong Kong. After raising $15 million in a very
   successful ICO, the company set the new standards in the industry.