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.
yoyow.org is a Blockchain-based social media platform developed by senior members of China Bitshares community. yoyow intends to become the blockchain version of Facebook, Quora and Zhihu, it uses a new consensus algorithm – PoF (proof of flow) to reward content creators, curators and third party platforms. Unlike its competitors, yoyow provides full toolkit for content compliance. But yet, it is still a fully decentralized blockchain content platform.