| zmc | ZoneAlarm Quarantine |
| zmesh | Imagine 3D Mesh Data |
| zmf | Zemax Lens Catalog File |
| zmg | ZENworks Desktop Management Image |
| zml | Zooming Markup Language |
| zmm | Zemax Multi-mode File |
| zmt | MOPAC Z-Matrix Molecule Data |
| zmx | Zemax Lens Data |
| zna | Zinio Annotation File |
| zncn | RMCProfile List Data. |
| znl | Number Lines Lesson Data |
| znm | ZBrush NoiseMaker Data |
| zof | Zemax Object Format File |
| zon | OmniPage Zone Template |
| zon | Verity Collection Building Custom Zone |
| zone | ISC Bind Zone Data |
| zot | Zoot Information Processor Database |
| zpa | Vielklang Audio Metadata |
| zpac | Marvelous Designer 3D Garment |
| zpc | ZappR Compiled Patch |
| zpk | ShipRush Shipping Template |
| zpl | Zemax Programming Language Source Code |
| zpr | ZappR Patch |
| zprj | ArcSoft Print Creations Template |
| zpx | MapOCX Pro Data |
| zrc | Rainlendar Compressed Resources File |
| zrd | Zemax Ray Database File |
| zre | ISOMAP Import Data |
| zrl | ZR FileWorks List |
| zs0 | ZSNES Save State |
| zs1 | ZSNES Save State |
| zs2 | ZSNES Save State |
| zs3 | ZSNES Save State |
| zs4 | ZSNES Save State |
| zs5 | ZSNES Save State |