Zoho Notebook - The most beautiful note-taking app across devices.
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.
TheBrain - TheBrain: The Ultimate Digital Memory
Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
es-Builder - es-Builder is a flexible, customizable, friendly, powerful and unique information manager for private personal use.
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.