eXist-db is a feature rich Open Source native XML database
ADP is a script language designed for Web database prgramming.
DPDL (Dynamic Packet Definition Language) is a small framework library
Simple ⇒ Object-Oriented ⇒ Functional
BASIC language and IDE for Education - Portable
Relational Database Management System
JavaScript/XML engine for Apache
Computer calculations made easy
C#Prolog -- A Prolog interpreter written in managed C#
Open Design and Integration Environment
a code generator for any programming language