LibreOffice - Base - Base, database, database frontend, LibreOffice, ODF, Open Standards, SQL, ODBC
My Visual Database - Using My Visual Database, you can create databases for invoicing, inventory, CRM, or any specific purpose.
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.
Runabase - Simple, powerful and flexible tool for creating databases and accounting programs.
Kexi - Kexi | Calligra Suite
XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.