Nem was written in Java, and a c++ version is in progress. It movement was created to build a new economy based on the principal of financial freedom, decentralization equity and solidarity. It popular in Japanese market, said to be second only to Bitcoin.
Revain is an honest platform for the the blockchain era. It is powered by blockchain technology. It prevents stakeholders from tampering and deleting reviews, and rewards users for quality feedback. Its slogan 'reinventing reviews' is really fitting.