| peak | Steinberg WaveLab Audio Peak |
| peaks | XEASY Peak List |
| ped | PLINK Pedigree and Genotype Table |
| pee | Sage Estimating Data |
| pek | Adobe Premiere Waveform Data |
| pel | IBM Forms Logger File |
| pen | Corel Paint Shop Pro Pen Preset |
| pep2 | ProntoEdit Professional v2 Data |
| perm | PLINK Adaptive Permutation Test Report |
| perspective | Xcode Project Data |
| pes | Brother Embroidery Data |
| pest | PEST Data |
| pev | CompHEP Output File |
| pev | POSE Palm Event Data |
| pez | Prezi Desktop Presentation |
| pfc | Corel PercetFit Component |
| pfcolors | Pixelformer Colors Data |
| pfd | Optima! 2.5 Document |
| pfd | Alzex Personal Finance Data |
| pfe | Programmers File Editor Data |
| pfep | PronoFoot Expert Plus Data |
| pfg | Epson PIF Designer Frame |
| pfh | MarkNet N2601e Flash Data |
| pflog | Peregrine ServiceCenter Database Update Log |
| pfx | PKCS #12 Data File |
| pg | STK Propagator File |
| pg | STK Great Arc Propagator File |
| pg2 | ProGen 2 Protocol Data |
| pga | PowerGREP Action Definition |
| pgbk | SoftTouch POS Database Backup |
