| 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 |
| zs6 | ZSNES Save State |
| zs7 | ZSNES Save State |
| zs8 | ZSNES Save State |
| zs9 | ZSNES Save State |
| zsig | Regina Signature List |
| zsk | Zoner Media Explorer Skin |
| zsl | ZBrush Saved Spotlight |
| zsp | WinView/400 Compressed Report Data |
| zsq | Luxmate iZSQ Sequence Data |
| zsr | Form Z Temporary Save Data |
| zst | ZSNES Save State File |
| zsu | IBIS-TRAD RAW Data |
| zsv | ZSentry Secure Vault |
| zsx | IBIS-TRAD RAW Data |
| zt6 | ZIPGenius Data |
| ztb | EmTec ZOC Data |
| ztg | Zemax Table Glass Data |
| zth | DivX Connected Theme |
| ztm | ZTreeWin Macro |
| ztp | Keytek ZapMaster Device Test Plan |