Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
MyEtherWallet - MyEtherWallet is a free, open-source, client-side interface.
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Toshi - A browser for the Ethereum network
BigchainDB - The scalable blockchain database.
Exodus.io - All-in-one app to secure, manage and exchange blockchain assets.