Poloniex!

exchange bitcoin with other peers for fiat or other cryptos.

ShapeShift.io is an instant exchange for cryptocurrencies. Buy or sell Bitcoin, Litecoin and other coins easily without an account. API available.

Changelly is an instant cryptocurrency exchange with clear interface that provides the best prices for Bitcoin, Litecoin, Ethereum and other altcoins.

Cryptocurrency exchange for your digital currency needs. Open-source, API-based and anonymous conversion of crypto majors BTC (Bitcoin), ETH (Ethereum), LTC (Litecoin) and latest altcoins for trading.

CoinSwitch is the first cryptocurrency and altcoin exchange aggregator. It has integrated many leading exchanges like Bittrex, ShapeShift, Changelly so that people get best rates at one place.

Coinwale is an instant cryptocurrency exchange with clear interface that provides the best prices for Bitcoin, Litecoin, Ethereum and more.

An up-to-date list of cryptocurrencies and assets like Bitcoin, Ethereum, Monero, Dash and many more. Check current prices on your phone, tablet or PC.