| 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 |
| 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 |
| ztb | EmTec ZOC Data |
| ztg | Zemax Table Glass Data |
| zth | DivX Connected Theme |
| ztm | ZTreeWin Macro |
| zvpl | Visual Paradigm License |
| zvx | R&S VNA Setup Data |
| zw1 | EPLAN Project Backup |
| zw2 | EPLAN Project Backup |
| zw3 | EPLAN Project Backup |
| zw4 | EPLAN Project Backup |
| zw5 | EPLAN Project Backup |
| zw6 | EPLAN Parts Backup Data |
| zw7 | EPLAN Dictionaries Backup Data |
| zw8 | EPLAN Configuration Data Backup |
| zw9 | EPLAN Basic Project |
| zwo | Zwift Cycling Workouts Data |
| zx | KGB ZX Spectrum Emulator Snapshot |
| zx82 | Speculator 97 Snapshot |
| zxc | Components Engine Database |
| zxe | ZX-Editor Second Edition Format Data |
| zxl | Immersioni Dive Logbook Data |
| zxs | ZX Spectrum Emulator ZXS Snapshot |