Delphy is a mobile platform for prediction markets built on Ethereum as a DApp. In fact, it is a light Ethereum client running on mobile devices. Its born decentralization ensures that prediction markets are hard to manipulate or shut down, and there is no need to trust one single entity.
Bitpayer is a decentralized trading platform that lets you trade Ethereum and Ethereum-based tokens directly with other users. It is the first digital assets decentralised exchange that shares profits with all users.