Free universal database tool
Immutable database and Datalog query engine for Clojure, ClojureScript
A powerful, cross platform, SQL database system
A nuts and bolts web engine / CMS (Content Management System)
a set of foundation classes for database engines
Declarative rich internet application platform
RAQUEL : "Relational Algebra Query, Update and Executive Language"
DBLX3 Relational Database System
CrNiCKL (chronicle) is a Java database for time series
Lightweight tool for connect to MySQL, Oracle 11g and PostgreSQL DB.
SQL Embedded Manager, is a light-weight implementation of the SSMS.
Uniform Database Abstraction for PHP Development
A schema to describe ANSI/ISO SQL in XML and associated tools
ChronoDB is a data manager for generic time series.