Mastercoin / Omni is a digital currency built on top of the Bitcoin blockchain. Its features include the development of a decentralised exchange and the implementation of smart property and savings wallet. The Master Protocol facilitates the creation and trading of smart properties and user currencies as well as other types of smart contracts. Mastercoin enables the Bitcoin eco-system to become more decentralized. The Mastercoin project was launched on 31 July 2013 with a one-month long fundraiser. Those interested in obtaining Mastercoin may send bitcoin to an 'Exodus Address' where the funds collected would be used to fund the development of Mastercoin. Around 500 people invested in Mastercoin sending roughly 5000 bitcoins to the Mastercoin project.
GoChain is a scalable, high performance, low cost, and decentralized cryptocurrency and blockchain that supports smart contracts and distributed applications. GoChain promises to deliver 100 times the speed of the Ethereum network, and acts a better alternative to smart contracts by using Proof-of-Reputation as a consensus mechanism rather than Proof-of-Work or Proof of Authority. Check out CoinBureau for the complete review of GoChain.