IDEX is a cryptocurrency exchange that was launched early last year. The exchange aims to offer users the experience of a centralized exchange that boasts the security benefits of a decentralized platform.
The exchange provides a peer-to-peer trading environment. It also uses smart contracts to relay transactions over the Ethereum blockchain, and this allows the order book of your account to be updated in real-time.
Oasis App is an open-source DeFi product developed by the Maker Foundation. An original OasisDEX project was closed in January, 2019. With the help of Oasis App, you can trade and borrow Ethereum tokens.
OTCBTC is a hybrid trading platform that combines the age-old approach of trading through the over-the-counter method with the mechanisms of a decentralized trading platform, or a DEX.