Blockchair is a blockchain search and analytics engine or you can also say it's a blockchain explorer on steroids. It currently works with Bitcoin only, but we'll be supporting Ethereum soon. You can filter blocks, transactions, and outputs by over 60 different criteria, as well as perform full-text search over the blockchain.
We aim to become a Google for blockchains. Our next priority is to create private APIs for traders which will make it possible for them to integrate blockchain analytics into trading algorithms. We also provide researchers with a way to batch export data from blockchains.