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.

Totle is a decentralized cryptocurrency exchange. Totle provides a platform that aggregates trades from other decentralized exchanges and makes it easier to access liquidity pools for a variety of DeFi assets at the best possible price.

Newdex is the first EOS based decentralized exchange. It's built on the EOS main chain and uses an off-chain matching mechanism to pair buyers and sellers. Newdex was hacked in September 2018, and lost around $58,000 worth of cryptocurrencies. Trading fees are 0.1%.