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.
Semux is an experimental high-performance blockchain platform that powers decentralized application. It's written purely in Java and powered by Semux BFT consensus algorithm.