SushiSwap is a decentralized exchange protocol that emerged as a fork of UniSwap. The main difference being the SUSHI token which acts as a governance token and entitles holders to a percentage of the trading fees charged on the network. Both UniSwap and SushiSwap, use an automated market making (AMM) model, where liquidity providers add funds to liquidity pools. Unlike centralized, order book exchanges, token pairs are priced according to an equation in which multiplying the prices of the 2 tokens will always equal a constant.

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.

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%.