| zxt | Warajevo Tape Image |
| zxu | Immersioni Dive Logbook DL7 Data |
| zyp | Reason Subtractor Synth Instrument Patch |
| zys | Business Integrator Database |
| zzd | ISIS Detailed Convergence Data |
| zzj | ISIS Outputs Matrix Coefficients Data |
| zzo | ISIS Control Unit Data |
| zzr | ZoneAlarm MailSafe Renamed File |
| zzs | ISIS Initial Conditions Data |
| zzs | MultiView Script |
| zzt | ISIS Unit Data Store |
| zzx | ISIS Results Data |
| zzz | WRAP Priority Sequence Stream Flow Availability Data |
| _14 | Altair FEKO Temporary Storage Data |
| _15 | Altair FEKO Temporary Storage Data |
| _16 | Altair FEKO Temporary Storage Data |
| _20 | Altair FEKO Temporary Storage Data |
| _21 | Altair FEKO Temporary Storage Data |
| _gs | Roboform GoodSync Data |
| _vc | ViewChoice Data |
| ~cr | CardRecovery Temporary File |
| ~si | Powersim Studio Project Backup |