| XDocs |
| XE - Built-in Field |
| XML |
| XML - Open Office Format |
| XML (Extensible Markup Language) |
| XML Data View |
| XML Expansion Pack |
| XML Paper Specification (XPS) |
| XML Schema |
| XML Transformation |
| XPS - File Size Optimisation |
| XPS (XML Paper Specification) |
| XSL (Extensible Stylesheet Language) |