| Abbreviation | Definition |
|---|---|
| PSTM | Python software transactional memory |
| PSVC | Paradise Software Video Conferencing |
| PSVS | protein structure validation software |
| PT | Process Tracker |
| PTD | Password Tracker Deluxe |
| PTD | Processador de Templates de Documentos |
| PTK | Perl TracKer |
| PTK | Programmer's Tool Kit |
| PTLIB | Portable Tools LIBrary |
| PTP | Preliminary Test Plan |
| PTP | Proficient Test Program |
| PTP | Programmable Text Processor |
| PTPA | Public Television Programming Association |
| PTPD | Precision Time Protocol Daemon |
| PTR | Preliminary Technical Review |
| PTS | Phuture Tech Software |
| PTU | Product Technology Unit |
| PTVS | Python tools for Visual Studio |
| PTW | Portable Technical Writer |
| PU | Personnel Utility |