OPENGL-OpenGL-file
OPF-Flip-Album-File
OPF-FlipAlbum-File
OPF-FlipViewer-FlipBook-File
OPF-Gemstar-eBook-Publisher-Package-Gemstar-eBook
OPF-KEPServerEX-Project-Configuration-File-Kepware-Technologies-Inc
OPF-Obsidium-Project-File-Header
OPF-Obsidium-Project-File-Obsidium-Software
OPF-Open-eBook-File
OPF-Visual-OMP-Project-File-DNA-Software-Inc
OP_-GKSetup-support-file
OPG-Unknown-file-extension
OPI-Adlib-OCR-processing-information-file
OPI-OmniPass-Exported-User-Softex-Inc
OPJ-Project-file-Orcad-Schematic-Capture
OPK-Origin-Origin-Pack-File-OriginLab-Corporation
OPL-Organiser-Programming-Language-source-file-Psion-Symbian
OPML-OPML-File
OPML-OPML-Outline-Processor-Markup-Language-Header
OPML-Outline-Processor-Markup-Language
OPM-Quadrox-Digital-CCTV-System-Components
OPN-Active-options-Exact
OPO-Output-executable-file-OPL
OP-Origin-Preprocessed-Origin-C-File-OriginLab-Corporation
OPOS-VirtuaSys-Opos-Script-VirtuaSys-Sistemas-Virtuais
OPP-IPhoto-File-Keronsoft
OP-Rescue-Disk-File
OPR-OPRO-X-Browser-file
OPS-Dynamite-VSP-Object-Placement-Style-3am-Solutions-UK-Limited
OPS-Microsoft-Office-Profile-Settings-File
OPS-Office-Profile-Settings-File
OPS-Office-Profile-Settings-v11-0-Header
OPS-Office-Profile-Settings-v1-1-Header
OPT-Developer-Studio-file-Microsoft
OPT-Optimize-support-file-QEMM
OPW-Organization-chart-Org-Plus-for-Windows
OPX-Extension-DLL-OPL
OPX-Inactive-options-Exact
OPX-Microsoft-Organizer-Organization-Chart
OPY-OptiY-Model-OptiY
OQY-Excel-OLAP-Query-File-Microsoft-Corporation
OQY-MS-Excel-OLAP-Query-File
OR2-Calendar-file-Lotus-Organizer-2
OR3-Lotus-Organizer-97-file
OR4-IBM-Lotus-Organizer-v4-File
OR4-Organizer-IBM
OR5-IBM-Lotus-Organizer-v5-File
OR5-Organizer-IBM
OR6-IBM-Lotus-Organizer-v6-File
OR6-Lotus-Organizer-data-file
TechTarget file types