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.
Cloakcoin is a completely secure, fully private and untraceable digital cash with full fungibilty (all coins equivalent). Cloakcoin is able to achieve this privacy through the use of an offchain coin mixing system called “Enigma”. Check out CoinBureau for the complete review on Cloakcoin.