Tendermint - arealive/Viper GitHub Wiki
Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines.
[1] https://github.com/tendermint/tendermint
External links
http://tendermint.readthedocs.io/projects/tools/en/master/introduction.html