XMail
X-Man
X-Men
X-Men 2
X-Men: Evolution
X-Men: Madness in Murderworld
X-Men: Mutant Academy
X-Men: Mutant Apocalypse
X-Men: Reign of Apocalypse
Xming
XML
XML-based User interface Language
XML bien formé
XML binarisé
XMLGUI
XMLHttpRequest
XML Key Management Specification
XML Metadata Interchange
XML Paper Specification
XML Process Definition Language
XML Query
XML-RPC
XML Schema
XML Signature
XMLSpy
XMLTV
XML valide
XMM-Newton
XMMS
XMMS2
Xmodem
Xmoto
XMPP Standards Foundation
XM Satellite Radio
XMule
XnGine
XNU
XnView
XO
xoanon
Xochicalco
Xochimilco
Xochipilli
Xochiquetzal
Xochitepec
XOIP
Xoïs
xokleng
Xolmis
Xólotl
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