Aptitudini freelancer - X
X.Org-Server
Xamarin
Xamarin Studio
Xamarin.Android
Xamarin.Forms
Xamarin.iOS
Xamarin.Mac
Xara Xtreme
XBL (XML Binding Language)
xDSL
Xen
XenApp (Citrix)
Xetra
XFDL (Extensible Forms Description Language)
Xfig
Xforms
Xframes
XHTML (Extensible HyperText Markup Language)
Xilinx
Xilinx ISE (Integrated Synthesis Environment)
Xinclude (XML Inclusions)
Xlink
XML
XML canonic
XnView
XOP (XML-binary Optimized Packaging)
Xpath (XML Path Language)
XPointer (XML Pointer Language)
XProc (XML Processing)
XSD (XML Schema Definition)
XSL (Extensible Stylesheet Language)
XSL-FO (Extensible Stylesheet Language – Formatting Objects))
XSLT (XSL Transformation)
xt:Commerce
Xtend
Xtext