| Abbreviation | Definition |
|---|---|
| PSDC | Professional Software Developer Certification |
| PSDN | Progress Software Developers Networktm |
| PSDP | Policy search by dynamic programming |
| PSDT | Parallel Software Development Tools |
| PSE | Photoshop Elements |
| PSE | Priest Spell Editor |
| PSEB | Pakistan Software Export Board |
| PSF | PHP Style Filter |
| PSF | Playstation Sound Format |
| PSF | Python Software Foundation |
| PSFI | Picture Scan Form Indication |
| PSFI | Portable Software Fault Isolation |
| PSG | Programming System Generator |
| PSI | Personal Software Inspector |
| PSI | Program Specific Information |
| PSI | Program Structure Interface |
| PSIA | Philippine Software Industry Association |
| PSIF | Programming Support and Initiatives Fund |
| PSIF | Programming Support Initiatives Fund |
| PSL | Personal Seat License |