| np | Portfolio NetPublish File |
| npj | Navicat for MySQL Batch Job |
| npt | Portfolio NetPublish Template |
| npx | TroublePix License Data |
| nrl | Autonomy Interwoven Link |
| nspj | Navicat for SQL Server Batch Job |
| nss | Magentic Screensaver |
| nt | MS-DOS Subsystem Startup File |
| ntc | Nikon Capture In-camera Custom Curve |
| nth | Nokia Phone Theme |
| nu6 | Norton Utilities System DLL |
| nup | ESET Smart Security Update |
| nv3dvpcmd | NVIDIA 3D Vision Player Command |
| nvx | nvStructural NVX Plug-in |
| nwut | Novell NetWare Tools |
| nxn | Avid Interplay Permanent License Data |
| ny | Audacity Nyquist Plug-in |
| oaf | ETH Oberon Applet |
| oap | Ovation Pro Applet |
| oby | EPOC ROM Image |
| odoc | Synology Office Document Pointer |
| olb | VAX Object Library |
| old | Backup Copy File |
| opef | OmniPass Encrypted Folder Data |
| ori | Backup Copy File |
| orig | Backup Copy File |
| osv | OpenERP OSV Module |
| osx | Mac OS X Related File |
| out | General Output File |
| ox2 | Orangutan X2 Firmware Update |
| p | Lightwave 3D Plug-in |
| p2kc | P2K Tools Batch |
| p2p | FolderShare Placeholder File |
| p2s | Pay2See Encrypted File |
| p3f | ADP v2 Application |
| p5p | NI Pro-53 Program |
| p64 | Datarescue IDA for Windows 64bit Plug-in |
| pakm | PAKM Package |
| pando | Pando |
| part | Partial Download |
| partial | Internet Explorer Partially Downloaded File |
| pasl | NASL Pedant PASL Script |
| passbook | Passbook Ticket |
| patch | Diff Output |
| pbx5script | Personal Backup Script |
| pbxscript | Personal Backup Script |
| pcb | Microsoft PowerPoint Data |
| pd3 | Denso BHT-BASIC3 Program File |
| pde | PowerDesk Encrypted File |
| pdfenx | Egis Encrypted Data |
| pdsbak | Proteus Project Backup |
| pdv | SmartWare Printer Driver |
| pe | Privacy Eraser Plugin |
| pekey | PhysicsEditor License Key |
| pfile | Microsoft Rights Management Protected Data |
| pfl | PhotoFiltre Plugin |
| pfplugin | Pixelformer Plugin |
| pg5 | M5000 Portable Bar Code Scanner Update |
| pgg | Astro Flash Creator Plugin |
| phpw | WinBinder Data |
| pid | Unix Process ID Data |
| pim | Avid Pro Tools Plugin Map |
| pinstall | Google Picasa Install Data |
| pkcs | PKCS File |
| pkey | Elcor PowerKey Encrypted File |
| pkpass | Passbook Pass |
| plasmoid | KDE Plasma Widget |
| plexapp | Plex Plugin Package |
| plg | Aston Shell Plug-in |
| Sibelius Plug-in |
| pls | Multimedia Playlist |
| plugin | Adobe Photoshop Plugin |
| Fusion Plugin |
| Mac OS X Plugin File |
| plw | Datarescue IDA for Windows 32bit Plug-in |
| plx | IDA Plug-in |
| plx64 | Datarescue IDA 64bit Plug-in |
| pm | Pidgin IM Module |
| pm3 | Crouzet Millenium 3 Program |
| pmp | PocketMusic Plugin |
| pn3 | Harvard Graphics 3.0 Printer Driver |
| pnach | PCSX2 External Patch |
| pnagent | Citrix Program Neighborhood Agent File |
| pnf | Precompiled Setup Information File |
| pol | Windows Group Policy File |
| ppa | Microsoft PowerPoint Add-in |
| ppd | PostScript Printer Description |
| ppenc | Ashampoo Magical Security Encrypted File |
| ppm_b | Nokia PPM Flash |
| ppn | Lexmark Printer Firmware |
| pp_ | Compressed PPD File |
| pqa | Palm Web Clipping Application |
| prd | Microsoft Word for DOS Printer Driver |
| prefpane | Mac OS X System Preference Pane |
| prj | General Project File |
| prlgprog | Korg Prologue Program |
| project | Unix Project Information |
| prt | SmartWare Printer Driver |
| SmartWare Text Screen Driver |
| pset | Adobe InDesign Plug-in Set |
