A simple, fast and versatile Datalog database
CrateDB is a distributed and scalable SQL database
The open big data serving engine
DBMS supporting graph, document, full-text and geospatial models
Free database schema discovery and comprehension tool
Graphical Java application for managing BibTeX and biblatex
eXist Native XML Database and Application Platform
General-purpose bitemporal database for SQL, Datalog & graph queries
Easy to use open source fast database for search
NSBase is a database management system.
a set of foundation classes for database engines
Relational database replication tool based on XML Schema
Applications for data management
Common Resource Grep
Search engine and data mining applications and ClueWeb datasets.
Elassandra = Elasticsearch + Apache Cassandra
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
A pure Java JDBC driver for Microsoft Access database files
Helping users to quickly understand SQL queries
Yet Another Elasticsearch GUI Client
Adhoc Data Exploration - Live & Easy
User friendly file-database GUI
Sedna is a native full-featured XML database management system.