| .xq |
XQuery File |
| .xrdml |
XRDML Data File |
| .xxe |
XXEncoded File |
| .xpm |
X11 Pixmap Graphic |
| .xaml |
XAML File |
| .xs |
Age of Empires 3 Map AI Generator |
| .x_t |
Parasolid Model Part File |
| .xds |
DS Game Maker Project File |
| .xoml |
Windows Workflow File |
| .xquery |
XQuery Source Code File |
| .xql |
XML Query Language File |
| .xqm |
XQuery Module |
| .xpdl |
XPDL Module |
| .x |
DirectX Model File |
| .xvm |
VMware Console Configuration File |
| .xpp |
X++ Source Code File |
| .xsf |
InfoPath Form Definition File |
| .xsc |
Visual Studio Dataset Internal Info File |
| .xmlff |
XML Flat File |
| .xmdx |
ExamSoft Answer File |
| .xbm |
X11 Bitmap Graphic |
| .xdr |
XML-Data Reduced File |
| .xyz |
Molecule Specification File |
| .xba |
OpenOffice.org Basic Module File |