| XOR |
Exclusive Or (auch: EOR) |
| XOS |
Experimental Operating System |
| XP |
Cross Point |
| XP |
Extreme Programming |
| XPC |
X11 Performance Characterization Group |
| XPEL |
X11 Protocol Engine Library |
| XPFE |
Cross Platform Front End |
| XPG |
X/Open Portability Guide |
| XPLA |
Extended Programmable Logic Array |
| XPT |
External Page Table |
| XPVM |
Executable Parallel Virtual Machine |
| XR |
Index Register |
| XRC |
Extended Remote Copy |
| XREF |
Cross Reference List |
| XSC |
Extended Scientific Calculation |
| XSI |
X/Open Systenm Interface Specification |
| XSL |
Extensible Style(sheet) Language |
| XSLFO |
Extensible Style(sheet) Language Formatting Object |
| XSLT |
Extensible Style(sheet) Language Transformation |
| XSMD |
Extended Storage Module Drive |
| XSMP |
X11 Session Manager Protocol |
| 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 |
| 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 |
| XWS |
X Window System, X11 |
| Y2K |
Year 2000 p. Chr. n. |
| YAODL |
Yet Another Object Description Language |
| YAPL |
Yet Another Programming Language |
| YODL |
Yet one Other Document Language |
| YP |
Yellow Pages (NIS) |
| YUV |
(Farbmodell: Luminanz Y, Chrominanzwerte U, V) |
| Z |
Zahl, Zeichen, Zeit, Zentral-, Zentrum, Zone |
| ZAC |
Zero Administration Client |
| ZAI |
Zero Administration Initiative |
| ZAK |
Zero Administration Kit (Microsoft) |