| .PATCHER | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PATH | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PAUSE | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PAYROLL | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PBMP | Unknown Developer | Matris Görüntü Dosyaları | Renamed UNIX Portable Bitmap Graphic (PBM) File | Unknown Software | Unknown Developer |
| .PBP | Sony | Oyun Dosyaları | PSP Firmware Update File | PBP Unpacker | Unknown Developer |
| .PC9 | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PC?= | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PCO | Unknown Developer | Metin Dosyaları | PC-Outline Outline | Unknown Software | Unknown Developer |
| .PD0 | SonTek | Sistem Dosyaları | SonTek Firmware File | Unknown Software | Unknown Developer |
| .PDFCEIBAL | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PDY | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PD_ | Unknown Developer | Yaygın Olmayan Dosyalar | Visc15 Images Setup File | Unknown Software | Unknown Developer |
| .PENIS | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PEPSI | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PFG | jEEPersDX | Geliştirici Dosyaları | jEEPers Program Configuration File | jEEPers | Unknown Developer |
| .PG2 | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PG3 | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PGL | Hewlett-Packard | Grafik Dosyaları | HP Plotter Language File Format | Unknown Software | Unknown Developer |
| .PG_ | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PHPUSERNAM | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PHR | Adobe Systems Incorporated | Veri Dosyaları | RoboHelp Phrase List | Unknown Software | Unknown Developer |
| .PH_ | Unknown Developer | Veri Dosyaları | C Poet Compressed Disk1 File | Unknown Software | Unknown Developer |
| .PII | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PJRPD | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PKPAK | Unknown Developer | Yaygın Olmayan Dosyalar | Archive File | Unknown Software | Unknown Developer |
| .PLACEHOLDEREXTENSION | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PLAYSOUND | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PLOTTER | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PLUS | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PND | DATAIR | Veri Dosyaları | DATAIR Pension System Pending Data | Unknown Software | Unknown Developer |
| .POD | Terminal Reality | Oyun Dosyaları | Terminal Reality Game Data File | BR2PodTools | Unknown Developer |
| .POM | Apache Software Foundation | Yaygın Olmayan Dosyalar | Maven Build File | Unknown Software | Unknown Developer |
| .PONGLIFE | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .POO | Open Source | Yaygın Olmayan Dosyalar | Commodore C64 Machine Code | Unknown Software | Unknown Developer |
| .POSTSCRIPT | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PPN | Lexmark International, Inc. | Veri Dosyaları | Lexmark Printer Firmware | Unknown Software | Unknown Developer |
| .PPT | Microsoft Corporation | Veri Dosyaları | PowerPoint Presentation | Unknown Software | Unknown Developer |
| .PPT- | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PPVA | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PQN | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PRG | Open Source | Yürütülebilir Dosyalar | Program File | Unknown Software | Unknown Developer |
| .PRINT | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PRISM | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .PRN | Various Developers | Sayfa Düzeni Dosyaları | HP PCL Printer Output | Unknown Software | Unknown Developer |
| .PROG | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PRS | Software Publishing Corporation (SPC) | Veri Dosyaları | Harvard Graphics Presentation | PRS Builder | Unknown Developer |
| .PRUI | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .PSI | SAPIEN Technologies | Yaygın Olmayan Dosyalar | PrimalScript Online Help Shortcut | Unknown Software | Unknown Developer |
| .PT3 | Harvard Graphics | Yaygın Olmayan Dosyalar | Harvard Device Driver File | Unknown Software | Unknown Developer |
| .PTB | Sage | Yedek Dosyaları | Sage 50 Backup File | Power Tab Editor | Unknown Developer |
| .PTF | Sony | Ayarlar Dosyaları | PSP Theme File | PSP Theme Toolbox | Unknown Developer |
| .PUT | Micro Fox Software | Sıkıştırılmış Dosyalar | PUT Compressed Data | Unknown Software | Unknown Developer |
| .PUZZLE | Unknown Developer | Yaygın Olmayan Dosyalar | X11 Puzzle File | Unknown Software | Unknown Developer |
| .PVD | Varden Development | Veri Dosyaları | Polygen3D Vector Descriptor | HPI Instalit | Unknown Developer |
| .PVI | Canon Inc. | Veri Dosyaları | Canon Picture Browser Cache Index | Unknown Software | Unknown Developer |
| .PVL | Unknown Developer | Veri Dosyaları | Instalit Library | HPI Instalit | Unknown Developer |
| .PVP | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PY1 | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PYB | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .PZI | Unknown Developer | Grafik Dosyaları | Pizazz Plus Graphics File | Unknown Software | Unknown Developer |
| .P_G | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QAFIBOE | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .QAM | Omnis Software | Ses Dosyaları | Omnis Studio Audio Data | Unknown Software | Unknown Developer |
| .QCC | Niobrara R&D Corporation | Sistem Dosyaları | NIOBRARA QUCM Firmware File | Unknown Software | Unknown Developer |
| .QCI | Quadratron Systems | Yaygın Olmayan Dosyalar | Cliq Accessories Phonebook Index | Unknown Software | Unknown Developer |
| .QCK | Esoteric Technologies | Veri Dosyaları | Jigsaw 2 Astrological Tool File | CRYSTALS | Unknown Developer |
| .QCM | Unknown Developer | Veri Dosyaları | Quick Command Data | Unknown Software | Unknown Developer |
| .QEP | Unknown Developer | Yaygın Olmayan Dosyalar | IRMA Workstation File | Unknown Software | Unknown Developer |
| .QLGENERATO | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QLP | Unknown Developer | Yaygın Olmayan Dosyalar | QuickLink Printer Driver | Unknown Software | Unknown Developer |
| .QMX | Unknown Developer | Video Dosyaları | Quantum Streaming Video Stream Control Data | Unknown Software | Unknown Developer |
| .QND | Unknown Developer | Yaygın Olmayan Dosyalar | Cliq Accessories Notepad Data | Unknown Software | Unknown Developer |
| .QNI | Unknown Developer | Yaygın Olmayan Dosyalar | Cliq Accessories Notepad Data | Unknown Software | Unknown Developer |
| .QNP | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QNR | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QRA | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QRN | Unknown Developer | Yaygın Olmayan Dosyalar | Quarantine File | Unknown Software | Unknown Developer |
| .QSB | Lenovo | Veri Dosyaları | Lenovo Firmware Update | Unknown Software | Unknown Developer |
| .QSZ | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .QTA | Unknown Developer | Sıkıştırılmış Dosyalar | Qtar Archive | Unknown Software | Unknown Developer |
| .QTW | Unknown Developer | Yaygın Olmayan Dosyalar | Qtext Text Document | Qtext | Unknown Developer |
| .QVI | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .QWK | Unknown Developer | Yaygın Olmayan Dosyalar | BBS Archive File | Unknown Software | Unknown Developer |
| .R8 | Unknown Developer | Kamera Raw Dosyaları | RAW Graphics File | Unknown Software | Unknown Developer |
| .R8P | Unknown Developer | Yazı Tipi Dosyaları | Font File | Unknown Software | Unknown Developer |
| .RA1 | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .RADIOREVOL | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RAINDROPPI | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RASTERW | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .RAW_PPM | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .RAZ | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .RBH | RBH Access | Sistem Dosyaları | RBH Access Technologies Firmware | Unknown Software | Unknown Developer |
| .RBN | Richard Pavlicek | Oyun Dosyaları | Richard’s Bridge Notation File | Unknown Software | Unknown Developer |
| .RCE | Unknown Developer | Yaygın Olmayan Dosyalar | NTgraph GUI Control 3D File | Unknown Software | Unknown Developer |
| .RCM | Faithlife | Veri Dosyaları | Logos Library System Verse Map | Unknown Software | Unknown Developer |
| .RCPROFILE | Unknown Developer | Yaygın Olmayan Dosyalar | Uncommon File Extension | Unknown Software | Unknown Developer |
| .RDB-SHM | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .RDB2 | Unknown Developer | Yaygın Olmayan Dosyalar | Unknown File Type | Unknown Software | Unknown Developer |
| .READ | Apple | Veri Dosyaları | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
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