Altova XMLSpy - The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.
MySQL - The world's most popular open source database
XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.
SQLite - SQLite Home Page