Kyber is a decentralized network and exchange that is focused on providing liquidity. Kyber enables token transactions between platforms and aims to make these exchanges of value easier, by connecting different ecosystems and applications. Kyber users can exchange tokens with greater liquidity because the network maintains a reserve of all tokens. Transactions are very fast and are processed via smart contracts that have a derivative functionality where users can hedge currencies to lower risk. Kyber can also be used make payments to anyone, in any token, across any platform. The network is powered by the Kyber token (KNC) that was released in an ICO that raised almost $49 million.

CoinsBank is a cryptocurrency platform that offers several services, including: a wallet, payment services, and exchange. CoinsBank was formerly known as BIT-X, but underwent a re-branding effort in 2016. The company operates in Scotland but is registered in Belize.

Trading Fee: 0.5%
Withdrawal Fee: 0.001 BTC
Number of Markets: 7

The fees are significantly higher than other exchanges.

BitFinex is a bitcoin to fiat exchange, a margin trading exchange, and a liquidity provider. The platform offers a number of features that expand the financial positions you can take - for example the ability to short Bitcoin via margin trading.
The exchange also offers a set of other cryptos apart from bitcoin such as Litecoin and Ethereum.
Deposits and withdrawals take place via the standard bank transfer means with fees of 0.1% and a minimum of $20. Bitcoin and Litecoin are free.
BitFinex takes security seriously and have moved from a hot wallet cold wallet set up to segregating customer funds where each user has access to their own wallet which they can review on the blockchain.
Bitfinex was hacked on 03 August 2016 and around 120,000 BTC were stolen.
Fee of 0.1% for most trades