| Abbreviation | Definition |
|---|---|
| ZCN | OmniPage file |
| ZCP | Zortech 21 Sample Work file |
| ZCP | ZShell Compressed Picture format |
| ZCV | Zortech 3 Readme File |
| ZDB | Canon Zoombrowser file |
| ZDB | EPSQ Security Officer Submission Database |
| ZDB | Intuit Quicken On-line File |
| ZDF | Z-Firm Document Folder |
| ZDF | Zoids Commando Data File |
| ZDG | Compressed ZiffNet text document (Zview) |
| ZDP | DesignPro Label Design file |
| ZDP | ZDNet Password |
| ZDS | DVDSubber DVD Subtitles and Scripts |
| ZEI | ANNO 1602 Game file |
| ZEI | Logocad Triga File |
| ZEISS | Zeiss CSLM file Bitmap graphics |
| ZEL | Zel MIDI Source File |
| ZER | Zerberus Data file |
| ZFC | Back4Win Backup Archive |
| ZFD | Zeroadic functions ( ABC programming language) |