There are many platform for trading or exchanging cryptocurrency . TOP 5 platform for trading are these
POLONIEX
Poloniex is a pure crypto to crypto exchange based in the United States. With a grand redesign in early 2015 the site has added a wealth of features to provide a fully immersive trading experience. Technical analysis charts and live chat mean it is easy to stay abreast of news flow and analyse price trends before taking a position.
For a crypto to crypto exchange there is good security and decent volume and orderbook depth for the majority of its trading pairs.
Maker Taker Trade Volume (trailing 30 day avg)
0.15% 0.25% < 600 BTC
0.14% 0.24% ≥ 600 BTC
0.12% 0.22% ≥ 1,200 BTC
0.10% 0.20% ≥ 2,400 BTC
BITHUMB
Bithumb is one of the largest exchanges in South Korea, allowing users to buy/sell/store Bitcoin and Ethereum. Bithump offers additional services like remittances and gift vouchers.
COINONE
Coinone is a South Korea-based exchange platform that allows users to buy, sell and store Bitcoin, Ether and Ether Classic. The market allows users to exchange these cryptocurrencies for South Korean Won (KRW) and offers margin trading services.
KRAKEN
Kraken is a top European based exchange and offers a variety of fiat to bitcoin pairs such as JPY, EUR, GBP and USD. Volume is decent especially on the JPY BTC pair after MT Gox's collaps - with Kraken assuming the mantle in that region. The exchange also has a smattering if popular crypto to crypto pairs including litecoin and dogecoin.
Another feature, but only for the brave is margin trading, with Kraken offering the ability to leverage your account balance on specific trading pairs. Although not for most this does give you cash more punch in the markets - but beware of margin calls draining your balance if the markets go against your trade.
Security is very high with their two factor authentication and PGP/GPG encyption.
aker Taker Volume
0.16% 0.26% < 50,000
0.14% 0.24% < 100,000
0.12% 0.22% < 250,000
0.10% 0.20% < 500,000
0.08% 0.18% < 1,000,000
BITFINEX
BitFinex offers three main functions - it is a pure bitcoin to fiat exchange, a margin trading exchange and a liquidity provider. The platform offers a number of features available 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.
Volume/Maker/Taker
$0.00 or more traded: 0.100% 0.200%
$500,000.00 or more traded: 0.080% 0.200%
$1,000,000.00 or more traded: 0.060% 0.200%
$2,500,000.00 or more traded: 0.040% 0.200%
$5,000,000.00 or more traded: 0.020% 0.200%