BitForex is a cryptocurrency exchange with headquarters in Singapore. BitForex also has several offices in other countries. It is one of the larger exchanges by trading volume and offers a large variety of trading pairs. Trading and withdrawal fees are similar other exchanges.

Covesting is a cryptocurrency exchange that allows users to copy crypto trading behavior of other traders. The platform offers a range of currency pairs and has a native COV token, that gives holders a 50% discount on trading fees, and is also used as a bonus system for traders whose activity is copied.
Trading Fees: 0.15%-0.25%

Poloniex is an established crypto to crypto exchange that is based in the United States. It offers a large selection of tokens to trade and has high liquidity. Poloniex was hacked in 2014, and lost more than 12% of their bitcoin supply. They have improved their security protocols since then. In February, 2018 Poloniex was acquired by Circle, one of the largest crypto payment providers.

Trading Fee: 0%-0.1% Maker and 0%-0.2% Taker
Deposit Fee: Varying Depending on blockchain fees
Withdrawal Fee: Varying Depending on blockchain fees
Number of Tokens/Coins: 97