File Formtas Starts with Letter O

List of all File Formats begins with letter O from the FileProInfo file types database.


Extension File Type Developer Free Apps
.O Compiled Object File Not Available Free O Apps
.OA2 Fujitsu Oasys Fujitsu Oasys Free OA2 Apps
.OA3 Fujitsu Oasys Fujitsu Oasys Free OA3 Apps
.OAB Offline Address Book Not Available Free OAB Apps
.OAM Adobe Edge Animate Widget File Adobe Free OAM Apps
.OAP OutSystems Application Package OutSystems Free OAP Apps
.OAR OpenSimulator Archive Not Available Free OAR Apps
.OAS Fujitsu Oasys Fujitsu Oasys Free OAS Apps
.OAT Android Optimized Application File Google Free OAT Apps
.OB! Orbit Downloader Incomplete Download Orbit Downloader Free OB! Apps
.OB2 Oberon-2 Source Code File Not Available Free OB2 Apps
.OBB Android Opaque Binary Blob File Google Free OBB Apps
.OBD Office Binder Document Microsoft Free OBD Apps
.OBF OsmAnd Offline Map File OsmAnd Free OBF Apps
.OBI Outlook RSS Subscription File Microsoft Free OBI Apps
.OBJ Relocatable Object Code Not Available Free OBJ Apps
.OBJ Wavefront 3D Object File Wavefront Technologies Free OBJ Apps
.OBK Backup File O&O Software Free OBK Apps
.OBML Opera Mini Saved Web Page Opera Software Free OBML Apps
.OBML15 Opera Mini Saved Web Page Opera Software Free OBML15 Apps
.OBML16 Opera Mini Saved Web Page Opera Software Free OBML16 Apps
.OBP Bryce Object File DAZ Productions Free OBP Apps
.OBT Openbox Theme File Openbox Free OBT Apps
.OBW Superior Drummer Sounds File Toontrack Free OBW Apps
.OBZ Compressed 3D Object File Smith Micro Free OBZ Apps
.OC3 openCanvas 3 Event File Portalgraphics Free OC3 Apps
.OC4 openCanvas 4 Event File Portalgraphics Free OC4 Apps
.OC5 openCanvas 5 Event File Portalgraphics Free OC5 Apps
.OCA Custom Control Library Type File Microsoft Free OCA Apps
.OCC Oceanic DataPool File Oceanic Consulting Corporation Free OCC Apps
.OCD OCAD Map File OCAD Free OCD Apps
.OCE Open Catalog Extension Connection File Oracle Free OCE Apps
.OCI openCanvas Image Portalgraphics Free OCI Apps
.OCIMF OCIMF HVPQ File OCIMF Free OCIMF Apps
.OCR FAXGrapper Fax Text File Nuance Communications Free OCR Apps
.OCR Subtitle Workshop OCR Script URUSoft Free OCR Apps
.OCT Radiance Octree File Radiance Free OCT Apps
.OCTEST Xcode Objective-C Unit Test Bundle Apple Free OCTEST Apps
.OCX ActiveX Control Microsoft Free OCX Apps
.OD Mascopt Graph Request File INRIA/UNSA Free OD Apps
.ODA Office Document Architecture Office Document Free ODA Apps
.ODB OpenDocument Database Apache Software Foundation Free ODB Apps
.ODB ABAQUS Database Not Available Free ODB Apps
.ODC OpenDocument Chart File OASIS Free ODC Apps
.ODC Office Data Connection File Microsoft Free ODC Apps
.ODEX Optimized Dalvik Executable Not Available Free ODEX Apps
.ODF OpenDocument Formula Apache Software Foundation Free ODF Apps
.ODF Battlezone Object Definition File Activision Free ODF Apps
.ODF Open Document File OASIS Free ODF Apps
.ODFT OpenDocument Formula Template OpenDocument Formula Free ODFT Apps
.ODG OpenDocument Graphic File OASIS Free ODG Apps
.ODI OpenDocument Image OASIS Free ODI Apps
.ODIF Open Document Interchange Format ITU-T Free ODIF Apps
.ODIN Locky Ransomware Encrypted File Not Available Free ODIN Apps
.ODL Object Description Language File Microsoft Free ODL Apps
.ODM OpenDocument Master Document OASIS Free ODM Apps
.ODM OverDrive Media File OverDrive Free ODM Apps
.ODO Online Operating System Write Document iCUBE Network Solutions Free ODO Apps
.ODP OpenDocument Presentation Oracle Free ODP Apps
.ODS Outlook Express 5 Mailbox Microsoft Free ODS Apps
.ODS OpenDocument Spreadsheet Oracle Free ODS Apps
.ODT Origin Dialog Theme File OriginLab Free ODT Apps
.ODT OpenDocument Text Document Apache Software Foundation Free ODT Apps
.ODT OOMMF Data Table File National Institute of Standards and Technology Free ODT Apps
.ODTTF Obfuscated OpenType Font Not Available Free ODTTF Apps
.ODX BizTalk Server Orchestration File Microsoft Free ODX Apps
.OEACCOUNT Windows Mail Account File Microsoft Free OEACCOUNT Apps
.OEB Open eBook File IDPF Free OEB Apps
.OEB Outlook Express Backup Wizard File QSX Free OEB Apps
.OEBZIP Zipped Open eBook File IDPF Free OEBZIP Apps
.OEM OEMEdit Save File McSherry Hardware UK Free OEM Apps
.OEM OEM Setup File Microsoft Free OEM Apps
.OEX Opera Extension Opera Software Free OEX Apps
.OFC Open Financial Connectivity File Microsoft Free OFC Apps
.OFD OfficeForms Document Toplevel Computing Free OFD Apps
.OFF Object File Format Not Available Free OFF Apps
.OFFICEUI Microsoft Office UI Customization File Microsoft Free OFFICEUI Apps
.OFL Ots File List Ots Labs Free OFL Apps
.OFM Melco Embroidery File Melco Free OFM Apps
.OFM OmniForm Form Nuance Communications Free OFM Apps
.OFP Origin Function Plot Theme File OriginLab Free OFP Apps
.OFR SMS Offer Manager File Microsoft Free OFR Apps
.OFR OptimFROG Audio File OptimFROG Free OFR Apps
.OFT Outlook File Template Microsoft Free OFT Apps
.OFX Open Financial Exchange File Not Available Free OFX Apps
.OGA Ogg Vorbis Audio File Xiph.Org Free OGA Apps
.OGF S.T.A.L.K.E.R. Model File GSC Game World Free OGF Apps
.OGG Ogg Vorbis Audio File Xiph.Org Free OGG Apps
.OGG Origin Graph File OriginLab Free OGG Apps
.OGGSTR Godot Engine Ogg Audio File Godot Free OGGSTR Apps
.OGGU Origin Unicode Graph File OriginLab Free OGGU Apps
.OGM Origin Matrix File OriginLab Free OGM Apps
.OGM Ogg Media File Not Available Free OGM Apps
.OGMU Origin Unicode Matrix File OriginLab Free OGMU Apps
.OGNC Dynamic Web Page Not Available Free OGNC Apps
.OGS Origons Movie Data File Origons Free OGS Apps
.OGS Origin LabTalk Script File OriginLab Free OGS Apps
.OGV Ogg Video File Xiph.Org Free OGV Apps
.OGW Origin Workbook File OriginLab Free OGW Apps
.OGWU Origin Unicode Workbook File OriginLab Free OGWU Apps
.OGX Ogg Vorbis Multiplexed Media File Xiph.Org Free OGX Apps
.OGZ Cube 2 Map File Wouter van Oortmerssen Free OGZ Apps
.OIF Origin Import Filter File OriginLab Free OIF Apps
.OIS Origin Analyses Theme File OriginLab Free OIS Apps
.OIV OpenIV Mod Package File RAGE Research project Free OIV Apps
.OKT Oktalyzer Module Not Available Free OKT Apps
.OL Valve Hammer Object Layout File Valve Free OL Apps
.OLA Online Access File Not Available Free OLA Apps
.OLB OLE Object Library Microsoft Free OLB Apps
.OLB OrCAD Symbol Library File Cadence Design Systems Free OLB Apps
.OLD Backup File Not Available Free OLD Apps
.OLK Outlook Address Book File Microsoft Free OLK Apps
.OLK14CATEGORY Outlook Category File Microsoft Free OLK14CATEGORY Apps
.OLK14CONTACT Outlook Contact File Microsoft Free OLK14CONTACT Apps
.OLK14EVENT Outlook Calendar Event File Microsoft Free OLK14EVENT Apps
.OLK14GROUP Outlook Group File Microsoft Free OLK14GROUP Apps
.OLK14MAILACCOUNT Outlook Mail Account File Microsoft Free OLK14MAILACCOUNT Apps
.OLK14MESSAGE Outlook Message File Microsoft Free OLK14MESSAGE Apps
.OLK14MSGATTACH Outlook 2011 Email Message Attachment File Microsoft Free OLK14MSGATTACH Apps
.OLK14MSGSOURCE Outlook Email Message Data File Microsoft Free OLK14MSGSOURCE Apps
.OLK14NOTE Outlook Note File Microsoft Free OLK14NOTE Apps
.OLK14PREF Outlook Preferences File Microsoft Free OLK14PREF Apps
.OLK14SIGNATURE Outlook Signature File Microsoft Free OLK14SIGNATURE Apps
.OLK14TASK Outlook Task File Microsoft Free OLK14TASK Apps
.OLK15MSGATTACH Outlook 2016 Email Message Attachment File Microsoft Free OLK15MSGATTACH Apps
.OLL TrialDirector Object Load List inData Free OLL Apps
.OLM Mac Outlook Database File Microsoft Free OLM Apps
.OLP Office Live Package Microsoft Free OLP Apps
.OLT Orbit Downloads List Orbit Downloader Free OLT Apps
.OMA Sony OpenMG Music File Sony Free OMA Apps
.OMCS Office Manager Access File Krekeler Free OMCS Apps
.OMF Open Media Framework File Avid Technology Free OMF Apps
.OMF OMF Interchange Image File Not Available Free OMF Apps
.OMG Image File O&O Software Free OMG Apps
.OMG OpenMG Audio File Sony Free OMG Apps
.OML OutSystems Modeling Language File OutSystems Free OML Apps
.OMO OMake Object File OMake Free OMO Apps
.OMOD Oblivion Mod Archive Not Available Free OMOD Apps
.OMP Office Manager Document Archive Krekeler Free OMP Apps
.OMP OpenMind Windows Document MatchWare Free OMP Apps
.OMS HP Printer Substrate Presets Package File HP Free OMS Apps
.OMX OtsAV Media Library Information File Ots Labs Free OMX Apps
.OND Lotus Notes Encapsulated Memo File IBM Free OND Apps
.ONE OneNote Document Microsoft Free ONE Apps
.ONEPKG Microsoft OneNote Package File Microsoft Free ONEPKG Apps
.ONETOC Microsoft OneNote Table of Contents File Microsoft Free ONETOC Apps
.ONETOC2 Microsoft OneNote Table of Contents File Microsoft Free ONETOC2 Apps
.ONT theWord Bible Text Module theWord Bible Software Free ONT Apps
.ONTX theWord Encrypted Bible Text Module theWord Bible Software Free ONTX Apps
.OO3 OmniOutliner 3 File The Omni Group Free OO3 Apps
.OO3TEMPLATE OmniOutliner Template The Omni Group Free OO3TEMPLATE Apps
.OOK Arachne Batch Script Arachne Free OOK Apps
.OP OpenPAT Report Not Available Free OP Apps
.OP2 Nastran Output File MSC Software Free OP2 Apps
.OP4 Nastran Output File MSC Software Free OP4 Apps
.OPAL Microsoft Office User Settings File Microsoft Free OPAL Apps
.OPAX Microsoft Office User Settings File Microsoft Free OPAX Apps
.OPD Durango Document Diffraction International Free OPD Apps
.OPD OmniPage Document Nuance Communications Free OPD Apps
.OPDOWNLOAD Opera Partially Downloaded File Opera Software Free OPDOWNLOAD Apps
.OPEICO Opeico Text File GamersLube Free OPEICO Apps
.OPENBSD OpenBSD Readme File Not Available Free OPENBSD Apps
.OPF FlipAlbum File E-Book Systems Free OPF Apps
.OPF FlipViewer FlipBook File E-Book Systems Free OPF Apps
.OPF Open Packaging Format File IDPF Free OPF Apps
.OPJ OrCAD Project File Cadence Design Systems Free OPJ Apps
.OPJ Origin Project OriginLab Free OPJ Apps
.OPJU Origin Unicode Project OriginLab Free OPJU Apps
.OPK GCW Zero Open Package Not Available Free OPK Apps
.OPLC Nokia Operator Logo File Nokia Free OPLC Apps
.OPML Outline Processor Markup Language File The Omni Group Free OPML Apps
.OPS Office Profile Settings File Microsoft Free OPS Apps
.OPT Options File Not Available Free OPT Apps
.OPT AGT Game Data File Not Available Free OPT Apps
.OPT Opterecenja File Zeljko Finzgar Free OPT Apps
.OPTIONS SE-SOFT Configuration File SE-SOFT Free OPTIONS Apps
.OPTS Linux Configuration Options File Not Available Free OPTS Apps
.OPUS Opus Audio File Xiph.Org Free OPUS Apps
.OPX FlipAlbum Photo Album File E-Book Systems Free OPX Apps
.OPX OrgPlus Org Chart Insperity Business Services Free OPX Apps
.OQY Excel OLAP Query File Microsoft Free OQY Apps
.OR2 Lotus Organizer 2 File IBM Free OR2 Apps
.OR3 IBM Lotus Organizer 97 File IBM Free OR3 Apps
.OR4 IBM Lotus Organizer 97 GS File IBM Free OR4 Apps
.OR5 Lotus Organizer 5 File IBM Free OR5 Apps
.OR6 Lotus Organizer 6 File IBM Free OR6 Apps
.ORA OpenRaster Image File Not Available Free ORA Apps
.ORA Oracle Database Configuration File Oracle Free ORA Apps
.ORB Original eBook Reader File Original eBook Free ORB Apps
.ORC Voyetra Digital Orchestrator File Voyetra Free ORC Apps
.ORDEREDTEST Visual Studio Ordered Test File Microsoft Free ORDEREDTEST Apps
.ORE Ore Executable File crait Free ORE Apps
.ORF Olympus RAW File Olympus Free ORF Apps
.ORG Lotus Organizer File IBM Free ORG Apps
.ORI Original File Not Available Free ORI Apps
.ORIG Original File Not Available Free ORIG Apps
.ORT Rich Text Editor Document IBM Free ORT Apps
.ORV Oracom Video File Oracom Free ORV Apps
.ORX RadiantOne VDS Database Schema Radiant Logic Free ORX Apps
.OS ObjectScript Source File ObjectScript Free OS Apps
.OSAX AppleScript Scripting Addition Apple Free OSAX Apps
.OSB Osu! Storyboard File peppy Free OSB Apps
.OSB OpenStreetMap Binary Map File Merkaartor Free OSB Apps
.OSC OpenStreetMap Change File OpenStreetMap Free OSC Apps
.OSC Obix Source Code File Not Available Free OSC Apps
.OSDX Search Connector Description File Microsoft Free OSDX Apps
.OSF Open Score Open Score Free OSF Apps
.OSFPVG OSFPVG OSFPVG Free OSFPVG Apps
.OSK osu! Skin File peppy Free OSK Apps
.OSM OpenStreetMap Map File OpenStreetMap Free OSM Apps
.OSP OpenShot Project File Jonathan Thomas Free OSP Apps
.OSR osu! Replay File peppy Free OSR Apps
.OSS Microsoft Outlook Saved Search File Microsoft Free OSS Apps
.OST Outlook Offline Data File Microsoft Free OST Apps
.OSU Osu! Script peppy Free OSU Apps
.OSX PowerPC Executable File Not Available Free OSX Apps
.OSZ osu! Beatmap File peppy Free OSZ Apps
.OSZ OpenLP Service File OpenLP Free OSZ Apps
.OT theWord Old Testament Text Module theWord Bible Software Free OT Apps
.OTA OTA Ringtone File Not Available Free OTA Apps
.OTA OTA Bitmap Image Nokia Free OTA Apps
.OTB Nokia Over The Air Bitmap Image Nokia Free OTB Apps
.OTC OpenDocument Chart Template OASIS Free OTC Apps
.OTF OpenTuft Tufting Design File NedGraphics Free OTF Apps
.OTF OpenDocument Formula Template Apache Software Foundation Free OTF Apps
.OTF OpenType Font Not Available Free OTF Apps
.OTG OpenDocument Graphic Template OASIS Free OTG Apps
.OTH Origin Graph Theme File OriginLab Free OTH Apps
.OTH OpenDocument HTML Template OASIS Free OTH Apps
.OTI OpenDocument Image Template OASIS Free OTI Apps
.OTL NoteTab Outline File Fookes Software Free OTL Apps
.OTLN Opal Outline File A Sharp Free OTLN Apps
.OTM Origin Matrix Template OriginLab Free OTM Apps
.OTM Outlook Macro File Microsoft Free OTM Apps
.OTMU Origin Unicode Matrix Template OriginLab Free OTMU Apps
.OTP OpenDocument Presentation Template Apache Software Foundation Free OTP Apps
.OTP Origin Graph Template OriginLab Free OTP Apps
.OTPU Origin Unicode Graph Template OriginLab Free OTPU Apps
.OTRKEY OnlineTvRecorder Encoded Video File OnlineTvRecorder.com Free OTRKEY Apps
.OTS OtsAV Album File Ots Labs Free OTS Apps
.OTS OpenDocument Spreadsheet Template Apache Software Foundation Free OTS Apps
.OTT OpenDocument Document Template OASIS Free OTT Apps
.OTW Origin Workbook Template OriginLab Free OTW Apps
.OTWU Origin Unicode Workbook Template OriginLab Free OTWU Apps
.OTX theWord Encrypted Old Testament Text Module theWord Bible Software Free OTX Apps
.OTZ OpenLP Theme File OpenLP Free OTZ Apps
.OUT Output File Not Available Free OUT Apps
.OUT Compiled Executable File Not Available Free OUT Apps
.OV2 TomTom Points of Interest Database TomTom Free OV2 Apps
.OVA Octava Musical Score Obtiv Free OVA Apps
.OVA Open Virtual Appliance VMware Free OVA Apps
.OVE Overture Musical Score GenieSoft Free OVE Apps
.OVF Open Virtualization File VMware Free OVF Apps
.OVH OMSI Vehicle Configuration File MR Software Free OVH Apps
.OVL Rollercoaster Tycoon 3 Data File Atari Free OVL Apps
.OVOLOG ooVoo Log File ooVoo Free OVOLOG Apps
.OVP The Overlay Maker Package File The Overlay Maker Free OVP Apps
.OVPN OpenVPN Configuration File OpenVPN Technologies Free OVPN Apps
.OVR The Overlay Maker Overlay File The Overlay Maker Free OVR Apps
.OVW Cubase WAVE Overview File Steinberg Media Technologies Free OVW Apps
.OVW Logic Pro Overview File Apple Free OVW Apps
.OVX Object-based Visual Application Language File Psion Free OVX Apps
.OW Free Pascal 1.0.x Object File Free Pascal Free OW Apps
.OWC OutWit Catch Database OutWit Technologies Free OWC Apps
.OWG OutWit Gear Database OutWit Technologies Free OWG Apps
.OWL OWL Source Code File Not Available Free OWL Apps
.OWM OutWit XML Mashup File OutWit Technologies Free OWM Apps
.OWX OutWit Hub Automator File OutWit Technologies Free OWX Apps
.OXPS OpenXPS File Microsoft Free OXPS Apps
.OXT Apache OpenOffice Extension Sun Microsystems Free OXT Apps
.OXYGENE Oxygene Project File RemObjects Free OXYGENE Apps
.OYX Approach Alternate Database Index Not Available Free OYX Apps
.OZ Opera Job Management Compressed File Opera Company Free OZ Apps
.OZB MU Online Image File Webzen Free OZB Apps
.OZJ MU Online Image File Webzen Free OZJ Apps
.OZT MU Online Image File Webzen Free OZT Apps
Extension File Type Developer Free Apps


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