Nash Exchange, formerly knows as NEX, is a decentralized exchange. Nash's decentralized exchange is powered by an off-chain matching engine that allows users to trade a variety of digital assets across several blockchains. The exchange's NEX token, gives holders the opportunity to stake tokens to earn a portion of the fees generated.

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

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%.