Velix.ID - Frictionless Identity verification through Blockchain
Ethereum Syllabus - A complete Ethereum learning track, packed with resources
BlockCypher - AWS for Block Chains
Ethereum Live - All the latest updates on Ethereum
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Notif.me SDK - A Node.js lib to send all your transactional notifications