| .PDFCEIBAL | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PDY | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PD_ | Unknown Developer | Sonstige Dateien | Visc15 Images Setup File | Unknown Software | Unknown Developer |
| .PENIS | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PEPSI | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PG2 | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PG3 | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PGL | Hewlett-Packard | Grafikdateien | HP Plotter Language File Format | Unknown Software | Unknown Developer |
| .PG_ | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PHPUSERNAM | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PHR | Adobe Systems Incorporated | Textdateien | RoboHelp Phrase List | Unknown Software | Unknown Developer |
| .PH_ | Unknown Developer | Textdateien | C Poet Compressed Disk1 File | Unknown Software | Unknown Developer |
| .PII | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PJRPD | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PKPAK | Unknown Developer | Sonstige Dateien | Archive File | Unknown Software | Unknown Developer |
| .PLACEHOLDEREXTENSION | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PLAYSOUND | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PLOTTER | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PLUS | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PND | DATAIR | Textdateien | DATAIR Pension System Pending Data | Unknown Software | Unknown Developer |
| .POM | Apache Software Foundation | Sonstige Dateien | Maven Build File | Unknown Software | Unknown Developer |
| .PONGLIFE | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .POO | Open Source | Sonstige Dateien | Commodore C64 Machine Code | Unknown Software | Unknown Developer |
| .POSTSCRIPT | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PPN | Lexmark International, Inc. | Textdateien | Lexmark Printer Firmware | Unknown Software | Unknown Developer |
| .PPT | Microsoft Corporation | Textdateien | PowerPoint Presentation | Unknown Software | Unknown Developer |
| .PPT- | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PPVA | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PQN | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PRG | Open Source | Ausführbare Dateien | Program File | Unknown Software | Unknown Developer |
| .PRINT | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PRISM | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PRN | Various Developers | Seitenlayoutdateien | HP PCL Printer Output | Unknown Software | Unknown Developer |
| .PROG | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PRUI | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .PSI | SAPIEN Technologies | Sonstige Dateien | PrimalScript Online Help Shortcut | Unknown Software | Unknown Developer |
| .PT3 | Harvard Graphics | Sonstige Dateien | Harvard Device Driver File | Unknown Software | Unknown Developer |
| .PUT | Micro Fox Software | Komprimierte Dateien | PUT Compressed Data | Unknown Software | Unknown Developer |
| .PUZZLE | Unknown Developer | Sonstige Dateien | X11 Puzzle File | Unknown Software | Unknown Developer |
| .PVD | Varden Development | Textdateien | Polygen3D Vector Descriptor | Unknown Software | Unknown Developer |
| .PVI | Canon Inc. | Textdateien | Canon Picture Browser Cache Index | Unknown Software | Unknown Developer |
| .PVP | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PY1 | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PYB | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PZI | Unknown Developer | Grafikdateien | Pizazz Plus Graphics File | Unknown Software | Unknown Developer |
| .P_G | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QAFIBOE | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .QAM | Omnis Software | Audiodateien | Omnis Studio Audio Data | Unknown Software | Unknown Developer |
| .QCC | Niobrara R&D Corporation | Systemdateien | NIOBRARA QUCM Firmware File | Unknown Software | Unknown Developer |
| .QCI | Quadratron Systems | Sonstige Dateien | Cliq Accessories Phonebook Index | Unknown Software | Unknown Developer |
| .QCM | Unknown Developer | Textdateien | Quick Command Data | Unknown Software | Unknown Developer |
| .QEP | Unknown Developer | Sonstige Dateien | IRMA Workstation File | Unknown Software | Unknown Developer |
| .QLGENERATO | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QLP | Unknown Developer | Sonstige Dateien | QuickLink Printer Driver | Unknown Software | Unknown Developer |
| .QMX | Unknown Developer | Videodateien | Quantum Streaming Video Stream Control Data | Unknown Software | Unknown Developer |
| .QND | Unknown Developer | Sonstige Dateien | Cliq Accessories Notepad Data | Unknown Software | Unknown Developer |
| .QNI | Unknown Developer | Sonstige Dateien | Cliq Accessories Notepad Data | Unknown Software | Unknown Developer |
| .QNP | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QNR | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QRA | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QRN | Unknown Developer | Sonstige Dateien | Quarantine File | Unknown Software | Unknown Developer |
| .QSB | Lenovo | Textdateien | Lenovo Firmware Update | Unknown Software | Unknown Developer |
| .QSZ | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .QTA | Unknown Developer | Komprimierte Dateien | Qtar Archive | Unknown Software | Unknown Developer |
| .QVI | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QWK | Unknown Developer | Sonstige Dateien | BBS Archive File | Unknown Software | Unknown Developer |
| .R8 | Unknown Developer | Kamerarohdaten | RAW Graphics File | Unknown Software | Unknown Developer |
| .R8P | Unknown Developer | Fontdateien | Font File | Unknown Software | Unknown Developer |
| .RA1 | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RADIOREVOL | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RAINDROPPI | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RASTERW | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RAW_PPM | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RAZ | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RBH | RBH Access | Systemdateien | RBH Access Technologies Firmware | Unknown Software | Unknown Developer |
| .RBN | Richard Pavlicek | Spieldateien | Richard’s Bridge Notation File | Unknown Software | Unknown Developer |
| .RCE | Unknown Developer | Sonstige Dateien | NTgraph GUI Control 3D File | Unknown Software | Unknown Developer |
| .RCM | Faithlife | Textdateien | Logos Library System Verse Map | Unknown Software | Unknown Developer |
| .RCPROFILE | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RDB-SHM | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RDB2 | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .READ | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REALDOWNLO | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RECOVERYDA | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .REFER | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .REG | Microsoft Corporation | Systemdateien | Registry File | Unknown Software | Unknown Developer |
| .REGDUMP | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .REGISTER | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REI | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RELEASE | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REMOVE | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REN | Unknown Developer | Sonstige Dateien | Renamed File | Unknown Software | Unknown Developer |
| .REP?FB_XD_FRAGMENT= | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .REPORTS | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REQU | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REQUEST | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .REQW | Unknown Developer | Sonstige Dateien | Unknown File Type | Unknown Software | Unknown Developer |
| .RESONANCEI | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RESOURCESC | Unknown Developer | Sonstige Dateien | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RESPECT | Apple | Textdateien | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
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