| XSSI |
Extended Server Side Includes |
| XSTX |
Transparent Start of Text |
| XSYN |
Transparent Synchronous Idle |
| XT |
Extended Technology |
| XT |
Crosstalk |
| XTAL |
Crystal |
| XTCLK |
External Transmit Clock |
| XTI |
X/Open Transport (Layer) Interface |
| xtk |
Parameter-Steuerfile (X-Talk) |
| xtp |
Programmoverlay (XTree Pro) |
| XTP |
XPress Transfer Protocol |
| XTTD |
Transparent Temporary Text Delay |
| XUI |
X11 User Interface |
| XUL |
Extensible/XML-Based User Interface Language |
| XUMA |
Expertensystem Umweltgefährlichkeit von Altlasten |
| XVE |
X11 Visual Extensions |
| XVI |
XTendbus VMEbus Interface |
| XVS |
X/Open System V Specification |
| XVT |
Extensible Virtual Toolkit |
| XWD |
X11 Window Dump |
| xwd |
X - Window - Dump |
| XWS |
X Window System, X11 |