CryptoBridge is a decentralized exchange (DEX) powered by the BridgeCoin (BOC). BOC holders receive 50% of the profits that CryptoBridge collects from trading fees and become innvestors in the BridgeCoin exchange. In order to receive their share of the profits, users must stake part of their BOC holdings for a period of 1, 3, 6 or 12 months. The longer you stake your coins, the higher the staking bonus will be.
CryptoBridge is built on the Bitshares blockchain, which has relatively fast confirmation times.

Trading Fee: 0.2 %
Withdrawal Fee: 0.01 BOC

OAX is developing a decentralized exchange that will address some of the privacy and security risks of centralized exchanges. Their platform will have a shared and decentralized order book, and will include the following features: a mechanism for credit risk assessment, structured dispute resolution, and a collateralized deposit system. OAX will apply the 0x protocol to improve liquidity for assets on the platform. Orders will be broadcasted publicly, and will be viewed by all potential takers. ddecentralized exchange model

Synthetix, previously known as Havven, is developing a decentralized exchange that will allow users to trade a variety of collateralized stablecoins and commodities. The Synthetix network is built on Ethereum, and is powered by the SNX token, which works together with the Synth token to provide traders with opportunities to buy and sell assets on the Ethereum blockchain, through a distributed collateral pool.