x86 architecture
Xalan
XBR
XCVR
XDS
Xen
Xenu
Xenu Link Sleuth
Xerces
xerographic recording
XGA
XHTML
Xindice
XIWT
XLink
| XLL
XML
XML-APIs
XML (Extensible Markup Language)
XML Path Language (XPath)
XML registry
XML-RPC
XML Schema
XML searching
XML::DB
XMLSec
XMTR/CVR
XO
XoDis
XOFF
|