This is the first data protocol layer open source in the blockchain
LevelDB key/value database in Go
An Internet-scale database
Functional, persistent, off-heap, high performance data structure
A redis protocol compatible nosql, it support multiple storage engines
BoltHold is an embeddable NoSQL store for Go types built on BoltDB
Small Database Management System
A distributed key-value storage system
Distributed "massively parallel" SQL query engine
Lovefield is a relational database for web apps
An in-memory database based on the CouchDB REST API
Formalized English (o.a.) for standardized information exchange
Distributed RDF Processing over Hadoop
jsql-sx is a javascript API for simple SQL-like local data handling
Free PHP script to backup and restore tables from MySQL database.
Hierarchical Data Management
phpMyBackupPro is the MySQL backup tool - especially without ssh!
Sedna is a native full-featured XML database management system.
Flexible database for storing object relations
smart Workflow Engine