Bittrex is one of the larger crypto to crypto exchanges offerign a large number of trading pairs into bitcoin - including all the major cryptos such as darkcoin, nextcoin and litecoin. They also offer NeuCoin and Ethereum.
The exchange does have a very high turnover crypto currencies - leading some to accuse it of allowing pump and dump schemes that erode confidence in the crypto currency ecosystem as a whole. Apart from that they do have very good security with two factor authentication and are United States based.
Trading fees are 0.25% with no reductions like cryptsy - and withdrawals are completely free and subject only to the transaction fee specified in the blockchain of the particular crypto currency.
Headquarters: Seattle, Washington
Company size: 2-10 employees