XML
xml
XML feed
XMLHttpRequest
XML Paper Specification
XML-RPC
XML Schema
XML válido
XML Web Services
XMMS
X-moto
XMule
XNU
xô
Xochicalco
Xochimilco
Xochipilli
Xochiquetzal
Xochitepec
xofrango
Xógum
xogum
xogunato
Xoguns
Xolotl
XOOPS
X/Open
xor
X.Org
Xorn
xosa
XOT
Xove
xoxota
Xpdf
X-planes
XPlay
X preto
XPS
XPS Essentials Pack
X.P.T.O.
XQuery
X-Rated Critics Organization
XRI
XrML
XRS Land
X-SAMPA
XSIL
XSL
xsl
português