The goal of the SteemData project is to make data from the STEEM blockchain more accessible to developers, researchers and 3rd party services.
SteemData is currently powered by MongoDB, the most used nosql, and 5th most popular database solution in the world. MongoDB comes with a powerful query language, and it allows us to easily accommodate blockchain changes thanks to schema flexibility.
With SteemData, you can query for any kind of information living on the STEEM blockchain, such as Accounts, Posts, Transactions, Blocks or any kind of Operations.
I highly recommend RoboMongo as a GUI utility for exploring SteemData.
Connection Details
Host: mongo1.steemdata.com
Port: 27017
Database: SteemData
Username: steemit
Password: steemit
Create a read-only steemit user from createUser.mongo from mongodb shell when mongo first starts.