Site: emirex.com
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Kyber is the decentralized liquidity aggregator that ensures swap of various tokens. Due to the on-chain liquidity protocol, Kyber allows for quick exchange of tokens in any decentralized application. 
DeversiFi - Decentralized Ethereum exchange
ChangeHero is a platform for instant cryptocurrency exchange. The service was based in Costa Rica and operated since 2017. To use the service, you do not need to register an account. Exchanges are conducted simply and anonymously and in matter of few minutes.