| Abbreviation | Definition |
|---|---|
| XTS | CSPro File |
| XUF | Milnta APL Transfer Function |
| XUL | XML User Interface Language |
| XUW | Milnta APL Transfer Function |
| XV | Khoros Visualization Image File |
| XV | Khoros Visualization Image File Format Bitmap graphics |
| XVB | WinExplorer Visual Basic Script |
| XVG | GROMACS Output File |
| XVID | XviD CODEC |
| XVM | VMware Virtual Machine Console |
| XVP | Xview Package File |
| XVS | Xview Scene Package File |
| XVU | BOClean Database File |
| XWC | Crosstalk for Windows Compiled Script |
| XWD | X- Window Dump screen window image Bitmap graphics format |
| XWF | Yamaha XG Works File |
| XWI | X-Wing Mission File |
| XWK | Crosstalk Keyboard mapping |
| XWP | Crosstalk Session |
| XWP | Xerox Writer Text document |