Hyperledger

      Started in 2015 by the Linux Foundation as an open-source initiative to advance and unite blockchain technology, Hyperledger is a highly modular enterprise-grade distributed ledger technology. 

     Being governed by some of the most advanced technology companies on the planet (such as IBM, RedHat, Intel, CME group, among many others) & offering some revolutionary ideas (such as the ability to change consensus mechanisms while in-runtime), Hyperledger has become the de facto standard in commercial blockchain technology.