An ultra-lightweight Python interpreter that runs with only 4KB of RAM
Sedna is a native full-featured XML database management system.
A Database System for Metamodeling and Method Engineering
RAQUEL : "Relational Algebra Query, Update and Executive Language"
Open Java API for OLAP
Fast and Secure way to use Attendance Software for your Organization!
Safe and Simple
dBase for Java
eXist-db is a feature rich Open Source native XML database