.O |
Compiled Object File |
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.OA2 |
Fujitsu Oasys |
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.OA3 |
Fujitsu Oasys |
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.OAB |
Offline Address Book |
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.OAM |
Adobe Edge Animate Widget File |
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OutSystems Application Package |
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OpenSimulator Archive |
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Fujitsu Oasys |
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.OAT |
Android Optimized Application File |
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.OB! |
Orbit Downloader Incomplete Download |
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.OB2 |
Oberon-2 Source Code File |
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.OBB |
Android Opaque Binary Blob File |
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Office Binder Document |
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.OBF |
OsmAnd Offline Map File |
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Outlook RSS Subscription File |
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.OBJ |
Relocatable Object Code |
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.OBJ |
Wavefront 3D Object File |
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.OBK |
Backup File |
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.OBML |
Opera Mini Saved Web Page |
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Opera Mini Saved Web Page |
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Opera Mini Saved Web Page |
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Bryce Object File |
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Openbox Theme File |
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Superior Drummer Sounds File |
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Compressed 3D Object File |
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.OC3 |
openCanvas 3 Event File |
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openCanvas 4 Event File |
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openCanvas 5 Event File |
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Custom Control Library Type File |
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Oceanic DataPool File |
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OCAD Map File |
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Open Catalog Extension Connection File |
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openCanvas Image |
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OCIMF HVPQ File |
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FAXGrapper Fax Text File |
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Subtitle Workshop OCR Script |
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.OCT |
Radiance Octree File |
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.OCTEST |
Xcode Objective-C Unit Test Bundle |
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ActiveX Control |
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.OD |
Mascopt Graph Request File |
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Office Document Architecture |
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OpenDocument Database |
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ABAQUS Database |
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OpenDocument Chart File |
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Office Data Connection File |
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Optimized Dalvik Executable |
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OpenDocument Formula |
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Battlezone Object Definition File |
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Open Document File |
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OpenDocument Formula Template |
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OpenDocument Graphic File |
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OpenDocument Image |
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.ODIF |
Open Document Interchange Format |
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Locky Ransomware Encrypted File |
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.ODL |
Object Description Language File |
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OpenDocument Master Document |
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OverDrive Media File |
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Online Operating System Write Document |
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Outlook Express 5 Mailbox |
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OpenDocument Spreadsheet |
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Origin Dialog Theme File |
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OpenDocument Text Document |
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OOMMF Data Table File |
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Obfuscated OpenType Font |
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BizTalk Server Orchestration File |
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Windows Mail Account File |
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.OEB |
Open eBook File |
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Outlook Express Backup Wizard File |
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.OEBZIP |
Zipped Open eBook File |
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OEMEdit Save File |
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OEM Setup File |
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Opera Extension |
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.OFC |
Open Financial Connectivity File |
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.OFD |
OfficeForms Document |
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.OFF |
Object File Format |
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.OFFICEUI |
Microsoft Office UI Customization File |
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.OFL |
Ots File List |
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.OFM |
Melco Embroidery File |
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OmniForm Form |
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Origin Function Plot Theme File |
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SMS Offer Manager File |
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OptimFROG Audio File |
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Outlook File Template |
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Open Financial Exchange File |
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.OGA |
Ogg Vorbis Audio File |
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S.T.A.L.K.E.R. Model File |
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Ogg Vorbis Audio File |
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Origin Graph File |
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Godot Engine Ogg Audio File |
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Origin Unicode Graph File |
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Origin Matrix File |
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Ogg Media File |
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Origin Unicode Matrix File |
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Dynamic Web Page |
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.OGS |
Origons Movie Data File |
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Origin LabTalk Script File |
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Ogg Video File |
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.OGW |
Origin Workbook File |
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Origin Unicode Workbook File |
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Ogg Vorbis Multiplexed Media File |
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.OGZ |
Cube 2 Map File |
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.OIF |
Origin Import Filter File |
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.OIS |
Origin Analyses Theme File |
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.OIV |
OpenIV Mod Package File |
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.OKT |
Oktalyzer Module |
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.OL |
Valve Hammer Object Layout File |
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.OLA |
Online Access File |
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.OLB |
OLE Object Library |
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.OLB |
OrCAD Symbol Library File |
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.OLD |
Backup File |
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.OLK |
Outlook Address Book File |
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.OLK14EVENT |
Outlook Calendar Event File |
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.OLK14GROUP |
Outlook Group File |
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.OLK14MAILACCOUNT |
Outlook Mail Account File |
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Outlook Message File |
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.OLK14MSGATTACH |
Outlook 2011 Email Message Attachment File |
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.OLK14MSGSOURCE |
Outlook Email Message Data File |
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.OLK14NOTE |
Outlook Note File |
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Outlook Preferences File |
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.OLK14SIGNATURE |
Outlook Signature File |
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Outlook Task File |
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.OLK15MSGATTACH |
Outlook 2016 Email Message Attachment File |
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.OLL |
TrialDirector Object Load List |
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.OLM |
Mac Outlook Database File |
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.OLP |
Office Live Package |
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.OLT |
Orbit Downloads List |
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.OMA |
Sony OpenMG Music File |
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.OMCS |
Office Manager Access File |
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.OMF |
Open Media Framework File |
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.OMF |
OMF Interchange Image File |
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.OMG |
Image File |
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.OMG |
OpenMG Audio File |
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.OML |
OutSystems Modeling Language File |
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.OMO |
OMake Object File |
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.OMOD |
Oblivion Mod Archive |
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.OMP |
Office Manager Document Archive |
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.OMP |
OpenMind Windows Document |
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.OMS |
HP Printer Substrate Presets Package File |
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.OMX |
OtsAV Media Library Information File |
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.OND |
Lotus Notes Encapsulated Memo File |
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.ONE |
OneNote Document |
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.ONEPKG |
Microsoft OneNote Package File |
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.ONETOC |
Microsoft OneNote Table of Contents File |
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.ONETOC2 |
Microsoft OneNote Table of Contents File |
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.ONT |
theWord Bible Text Module |
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.ONTX |
theWord Encrypted Bible Text Module |
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.OO3 |
OmniOutliner 3 File |
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.OO3TEMPLATE |
OmniOutliner Template |
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.OOK |
Arachne Batch Script |
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.OP |
OpenPAT Report |
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.OP2 |
Nastran Output File |
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.OP4 |
Nastran Output File |
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.OPAL |
Microsoft Office User Settings File |
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.OPAX |
Microsoft Office User Settings File |
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.OPD |
Durango Document |
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.OPD |
OmniPage Document |
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.OPDOWNLOAD |
Opera Partially Downloaded File |
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.OPEICO |
Opeico Text File |
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.OPENBSD |
OpenBSD Readme File |
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.OPF |
FlipAlbum File |
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.OPF |
FlipViewer FlipBook File |
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.OPF |
Open Packaging Format File |
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.OPJ |
OrCAD Project File |
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.OPJ |
Origin Project |
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.OPJU |
Origin Unicode Project |
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.OPK |
GCW Zero Open Package |
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.OPLC |
Nokia Operator Logo File |
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.OPML |
Outline Processor Markup Language File |
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.OPS |
Office Profile Settings File |
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.OPT |
Options File |
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.OPT |
AGT Game Data File |
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.OPT |
Opterecenja File |
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.OPTIONS |
SE-SOFT Configuration File |
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.OPTS |
Linux Configuration Options File |
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.OPUS |
Opus Audio File |
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.OPX |
FlipAlbum Photo Album File |
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.OPX |
OrgPlus Org Chart |
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.OQY |
Excel OLAP Query File |
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.OR2 |
Lotus Organizer 2 File |
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.OR3 |
IBM Lotus Organizer 97 File |
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.OR4 |
IBM Lotus Organizer 97 GS File |
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.OR5 |
Lotus Organizer 5 File |
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.OR6 |
Lotus Organizer 6 File |
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.ORA |
OpenRaster Image File |
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.ORA |
Oracle Database Configuration File |
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.ORB |
Original eBook Reader File |
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.ORC |
Voyetra Digital Orchestrator File |
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.ORDEREDTEST |
Visual Studio Ordered Test File |
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.ORE |
Ore Executable File |
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.ORF |
Olympus RAW File |
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.ORG |
Lotus Organizer File |
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.ORI |
Original File |
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.ORIG |
Original File |
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.ORT |
Rich Text Editor Document |
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.ORV |
Oracom Video File |
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.ORX |
RadiantOne VDS Database Schema |
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.OS |
ObjectScript Source File |
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.OSAX |
AppleScript Scripting Addition |
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.OSB |
Osu! Storyboard File |
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OpenStreetMap Binary Map File |
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.OSC |
OpenStreetMap Change File |
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.OSC |
Obix Source Code File |
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.OSDX |
Search Connector Description File |
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.OSF |
Open Score |
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.OSFPVG |
OSFPVG |
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.OSK |
osu! Skin File |
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.OSM |
OpenStreetMap Map File |
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.OSP |
OpenShot Project File |
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.OSR |
osu! Replay File |
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.OSS |
Microsoft Outlook Saved Search File |
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.OST |
Outlook Offline Data File |
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.OSU |
Osu! Script |
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.OSX |
PowerPC Executable File |
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.OSZ |
osu! Beatmap File |
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.OSZ |
OpenLP Service File |
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.OT |
theWord Old Testament Text Module |
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.OTA |
OTA Ringtone File |
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.OTA |
OTA Bitmap Image |
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.OTB |
Nokia Over The Air Bitmap Image |
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.OTC |
OpenDocument Chart Template |
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.OTF |
OpenTuft Tufting Design File |
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.OTF |
OpenDocument Formula Template |
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.OTF |
OpenType Font |
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.OTG |
OpenDocument Graphic Template |
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.OTH |
Origin Graph Theme File |
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.OTH |
OpenDocument HTML Template |
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.OTI |
OpenDocument Image Template |
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.OTL |
NoteTab Outline File |
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.OTLN |
Opal Outline File |
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.OTM |
Origin Matrix Template |
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.OTM |
Outlook Macro File |
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.OTMU |
Origin Unicode Matrix Template |
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.OTP |
OpenDocument Presentation Template |
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.OTP |
Origin Graph Template |
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.OTPU |
Origin Unicode Graph Template |
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.OTRKEY |
OnlineTvRecorder Encoded Video File |
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.OTS |
OtsAV Album File |
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.OTS |
OpenDocument Spreadsheet Template |
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.OTT |
OpenDocument Document Template |
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.OTW |
Origin Workbook Template |
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.OTWU |
Origin Unicode Workbook Template |
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.OTX |
theWord Encrypted Old Testament Text Module |
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.OTZ |
OpenLP Theme File |
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.OUT |
Output File |
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.OV2 |
TomTom Points of Interest Database |
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.OVA |
Octava Musical Score |
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.OVA |
Open Virtual Appliance |
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.OVE |
Overture Musical Score |
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.OVF |
Open Virtualization File |
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.OVH |
OMSI Vehicle Configuration File |
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.OVL |
Rollercoaster Tycoon 3 Data File |
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.OVOLOG |
ooVoo Log File |
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.OVP |
The Overlay Maker Package File |
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.OVPN |
OpenVPN Configuration File |
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.OVR |
The Overlay Maker Overlay File |
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.OVW |
Cubase WAVE Overview File |
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.OVW |
Logic Pro Overview File |
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.OVX |
Object-based Visual Application Language File |
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.OW |
Free Pascal 1.0.x Object File |
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.OWC |
OutWit Catch Database |
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.OWG |
OutWit Gear Database |
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.OWL |
OWL Source Code File |
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.OWM |
OutWit XML Mashup File |
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.OWX |
OutWit Hub Automator File |
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.OXPS |
OpenXPS File |
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.OXT |
Apache OpenOffice Extension |
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.OXYGENE |
Oxygene Project File |
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.OYX |
Approach Alternate Database Index |
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.OZ |
Opera Job Management Compressed File |
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.OZB |
MU Online Image File |
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.OZJ |
MU Online Image File |
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.OZT |
MU Online Image File |
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