X


X.25
X.29
X.400
X.500
X.509
X/Open
X2
X86-32
X86-64
xD-Picture Card
Xenix
Xeon
XF (eXtended Format)
XG (eXtended General midi)
XGA (eXtended Graphics Array)
XHTML (Extensible Hypertext Markup Language)
XLR
XML (eXtensible Markup Language)
X-Modem
XMS (eXtended Memory Specification)
XON/XOF
XOT
XPath (XML Path language)
XPG (X/Open's Portability Guide)
XQL (XML Query Language)
XSL (Extensible Stylesheet Language)
XSLT (XSL Transformation)
XT (eXtended [or eXTended] Technology)
XXencode / XXdecode
XXX
XXX password