| Abbreviation | Definition |
|---|---|
| PSD | Adobe Photoshop format Bitmap graphics |
| PSD | Periscope Debugger Definition file |
| PSE | Bitmap graphics (IBM printer Page SEgment) |
| PSEG | Page SEGment IBM printer Bitmap graphics file |
| PSF | Outline PostScript printer font (ChiWriter) |
| PSF | Palette Storage Format |
| PSH | Perl Shell |
| PSID | Postscript Image Data (text/graphics) (ASCII file) |
| PSM | Protracker Studio Module Music format |
| PSM | Symbol table of IDE (Turbo Pascal) |
| PSN | Presentation file (Sound Script) |
| PSP | Procedure (Prodea Synergy) |
| PST | Microsoft Outlook Personal Folder File |
| PST | Paste buffer ( Lahey Fortran) |
| PST | Postbox file ( BMail) |
| PSZ | Compressed Postscript File |
| PT | Game crack Player Tools file |
| PT | Kodak Precision Color Management System |
| PT | Pitch Track Sound file |
| PT3 | Harvard Graphics 3.0 Device driver |