| Abbreviation | Definition |
|---|---|
| PE | Professional Edition |
| PEACE | Ptolemy Extension As a Codesign Environment |
| PEAR | Php Extension And Application Repository |
| PEAS | Periodic Error Analyzing Software |
| PEFS | Private Encrypted File System |
| PEGS | Portable Event Graph System |
| PEM | Plesk Enterprise Manager |
| PEM | Properties, Events, Methods |
| PEMJ | Patch by Exception Modular Jackfield |
| PEML | Programming Exercise Markup Language |
| PEMS | Pharmacy Education Management System |
| PEPt | Presentation, Encoding, Protocol, and Transport |
| PER | Lads On Tour |
| PERL | Practical Extraction and Report Lister |
| PERL | Program Extraction and Reporting Language |
| PES | Personal Email Solution |
| PEST | Pretty Excellent Synchronization Tool |
| PET | Peformance Evaluation Tool |
| PETE | Portable Expression Template Engine |
| PETS | Personal Electronic Teller Of Stories |