| Company Name | Software Titles |
|---|---|
| Pen Systems | 1 |
| Pelco | 6 |
| peko Software | 1 |
| Pegasys | 5 |
| Pegasus Imaging | 2 |
| PEERNET | 1 |
| PeerBlock | 2 |
| Peek Traffic | 1 |
| Peavey Electronics | 1 |
| Pearson | 43 |
| PearlMountain Soft | 1 |
| Pearl Street Software | 1 |
| Peanut Press | 1 |
| PeakStrategy | 1 |
| Peak version BIAS worldwide | 1 |
| Peak Systems | 1 |
| PDSI | 1 |
| PDSA | 2 |
| PDRel | 1 |
| PDFpenPro SmileOnMyMac | 1 |
| PdfMerge | 1 |
| PDFLite | 2 |
| pdfforge | 1 |
| pdfconverter.com | 1 |
| pdf-to-html-word.com | 2 |
| PDF Technologies | 3 |
| PDF Pro Software | 1 |
| PDF Complete | 3 |
| PDAwin | 1 |
| PDAmill | 2 |
| PcWinTech | 1 |
| PCVITA Software | 1 |
| Pcvita | 1 |
| PCVARE Software | 1 |
| Pcsx2 Team | 1 |
| PCSafe www.pcsafe.com | 1 |
| PCPW | 1 |
| PCDrafter | 1 |
| PCD | 4 |
| PCC | 1 |
| PCB Matrix | 2 |
| PCB Libraries | 2 |
| PCAUSA | 1 |
| PCASE Committee | 1 |
| PC-Doctor | 6 |
| PC Utility | 2 |
| PC Tools | 9 |
| PC Pitstop | 7 |
| PC Optimizer Pro | 1 |
| PC Micro | 1 |