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.
The main goal of Callisto is to research and develop a reference implementation of a self-sustaining, self-governed, self-funded blockchain ecosystem and development environment. Callisto aims to establish a secure and contribution-friendly environment for further protocol development and improvements. It will rely on a built-in system of smart-contracts to achieve this goal.