Poloniex is a cryptocurrency exchange that offers over 100 bitcoin (BTC) markets available for trading. It provides its customers with a secure trading environment as well as advanced charts and data analysis tools. The platform enables its users to buy and sell cryptocurrencies such as litecoin, namecoin, dogecoin, and more. Users of Poloniex are required to be 18 years of age or older. With no deposit or withdrawal fees, it charges a flat rate of 0.2% on all trading transactions.