File extension | The full name of the file | Popularity |
File extension O | Compiled Object File | |
File extension OAB | Offline Address Book | |
File extension OAM | Adobe Edge Animate Widget File | |
File extension OAR | OpenSimulator Archive | |
File extension OB! | Orbit Downloader Incomplete Download | |
File extension OBB | Android Opaque Binary Blob File | |
File extension OBD | Office Binder Document | |
File extension OBI | Outlook RSS Subscription File | |
File extension OBJ | Wavefront 3D Object File | |
File extension OBML | Opera Mini Saved Web Page | |
File extension OBP | Bryce Object File | |
File extension OBT | Openbox Theme File | |
File extension OBW | Superior Drummer Sounds File | |
File extension OBZ | Compressed 3D Object File | |
File extension OC3 | openCanvas 3 Event File | |
File extension OC4 | openCanvas 4 Event File | |
File extension OC5 | openCanvas 5 Event File | |
File extension OCA | Custom Control Library Type File | |
File extension OCC | Oceanic DataPool File | |
File extension OCD | OCAD Map File | |
File extension OCE | Open Catalog Extension Connection File | |
File extension OCI | openCanvas Image | |
File extension OCR | FAXGrapper Fax Text File | |
File extension OCT | Radiance Octree File | |
File extension OCTEST | Xcode Objective-C Unit Test Bundle | |
File extension OCX | ActiveX Control | |
File extension OD | Mascopt Graph Request File | |
File extension ODB | OpenDocument Database | |
File extension ODC | Office Data Connection File | |
File extension ODF | OpenDocument Formula | |
File extension ODG | OpenDocument Graphic File | |
File extension ODI | OpenDocument Image | |
File extension ODIF | Open Document Interchange Format | |
File extension ODL | Object Description Language File | |
File extension ODM | OverDrive Media File | |
File extension ODO | Online Operating System Write Document | |
File extension ODP | OpenDocument Presentation | |
File extension ODS | OpenDocument Spreadsheet | |
File extension ODT | OpenDocument Text Document | |
File extension ODX | BizTalk Server Orchestration File | |
File extension OEACCOUNT | Windows Mail Account File | |
File extension OEB | Outlook Express Backup Wizard File | |
File extension OEM | OEM Setup File | |
File extension OEX | Opera Extension | |
File extension OFC | Open Financial Connectivity File | |
File extension OFF | Object File Format | |
File extension OFL | Ots File List | |
File extension OFM | Melco Embroidery File | |
File extension OFR | OptimFROG Audio File | |
File extension OFT | Outlook File Template | |
File extension OFX | Open Financial Exchange File | |
File extension OGA | Ogg Vorbis Audio File | |
File extension OGF | S.T.A.L.K.E.R. Model File | |
File extension OGG | Ogg Vorbis Audio File | |
File extension OGM | Ogg Media File | |
File extension OGNC | Dynamic Web Page | |
File extension OGS | Origons Movie Data File | |
File extension OGV | Ogg Video File | |
File extension OGX | Ogg Vorbis Multiplexed Media File | |
File extension OGZ | Cube 2 Map File | |
File extension OKT | Oktalyzer Module | |
File extension OLA | Online Access File | |
File extension OLB | OLE Object Library | |
File extension OLD | Backup File | |
File extension OLK | Outlook Address Book File | |
File extension OLK14CATEGORY | Outlook Category File | |
File extension OLK14CONTACT | Outlook Contact File | |
File extension OLK14EVENT | Outlook Calendar Event File | |
File extension OLK14GROUP | Outlook Group File | |
File extension OLK14MAILACCOUNT | Outlook Mail Account File | |
File extension OLK14MESSAGE | Outlook Message File | |
File extension OLK14MSGSOURCE | Outlook Email Message Data File | |
File extension OLK14NOTE | Outlook Note File | |
File extension OLK14PREF | Outlook Preferences File | |
File extension OLK14SIGNATURE | Outlook Signature File | |
File extension OLK14TASK | Outlook Task File | |
File extension OLM | Mac Outlook Database File | |
File extension OLT | Orbit Downloads List | |
File extension OMA | Sony OpenMG Music File | |
File extension OMCS | Office Manager Access File | |
File extension OMF | Open Media Framework File | |
File extension OMG | O&O DiskImage backup file | |
File extension OMO | OMake Object File | |
File extension OMOD | Oblivion Mod Archive | |
File extension OMP | Office Manager Document Archive | |
File extension OMX | OtsAV Media Library Information File | |
File extension OND | Lotus Notes Encapsulated Memo File | |
File extension ONE | OneNote Document | |
File extension ONEPKG | Microsoft OneNote Package File | |
File extension ONETOC2 | Microsoft OneNote Table of Contents File | |
File extension ONT | theWord Bible Text Module | |
File extension ONTX | theWord Encrypted Bible Text Module | |
File extension OO3 | OmniOutliner 3 File | |
File extension OOK | Arachne Batch Script | |
File extension OPD | Durango Interferometry Software document file | |
File extension OPDOWNLOAD | Opera Partially Downloaded File | |
File extension OPENBSD | OpenBSD Readme File | |
File extension OPF | Open Packaging Format File | |
File extension OPJ | OrCAD Project File | |
File extension OPLC | Nokia Operator Logo File | |
File extension OPML | Outline Processor Markup Language File | |
File extension OPS | Office Profile Settings File | |
File extension OPT | MySQL database data file | |
File extension OPTIONS | SE-SOFT Configuration File | |
File extension OPTS | Linux Configuration Options File | |
File extension OPUS | Opus Audio File | |
File extension OPX | OrgPlus Org Chart | |
File extension OQY | Excel OLAP Query File | |
File extension OR2 | Lotus Organizer 2 File | |
File extension OR3 | IBM Lotus Organizer 97 File | |
File extension OR4 | IBM Lotus Organizer 97 GS File | |
File extension OR5 | Lotus Organizer 5 File | |
File extension OR6 | Lotus Organizer 6 File | |
File extension ORA | Oracle Database Configuration File | |
File extension ORC | CSound orchestra midi file | |
File extension ORDEREDTEST | Visual Studio Ordered Test File | |
File extension ORE | Ore Executable File | |
File extension ORF | Olympus RAW File | |
File extension ORG | Lotus Organizer File | |
File extension ORI | Original File | |
File extension ORIG | Original File | |
File extension ORT | COREX orthographic transcriptions file | |
File extension ORV | Oracom Video File | |
File extension ORX | RadiantOne VDS Database Schema | |
File extension OS | ObjectScript Source File | |
File extension OSAX | FindFile OSAX mac file type | |
File extension OSB | OpenStreetMap Binary Map File | |
File extension OSC | Remote Installation Services client installation wizard file | |
File extension OSDX | Search Connector Description File | |
File extension OSK | Osu! Skin File | |
File extension OSM | OpenStreetMap Map File | |
File extension OSP | OpenShot Project File | |
File extension OSR | Osu! Replay File | |
File extension OSS | Microsoft Outlook Saved Search File | |
File extension OST | Outlook Offline Folder File | |
File extension OSU | Osu! Script | |
File extension OSX | PowerPC Executable File | |
File extension OSZ | Osu! Beatmap File | |
File extension OT | theWord Old Testament Text Module | |
File extension OTA | OTA Bitmap Image | |
File extension OTB | Nokia Over The Air Bitmap Image | |
File extension OTC | OpenDocument Chart Template | |
File extension OTF | OpenType Font | |
File extension OTG | OpenDocument Graphic Template | |
File extension OTH | OpenDocument HTML Template | |
File extension OTI | OpenDocument Image Template | |
File extension OTL | NoteTab Outline File | |
File extension OTLN | Opal Outline File | |
File extension OTM | Outlook Macro File | |
File extension OTP | OpenDocument Presentation Template | |
File extension OTRKEY | OnlineTvRecorder Encoded Video File | |
File extension OTS | OpenDocument Spreadsheet Template | |
File extension OTT | OpenDocument Document Template | |
File extension OTX | theWord Encrypted Old Testament Text Module | |
File extension OTZ | OpenLP Theme File | |
File extension OUT | Output File | |
File extension OV2 | TomTom Points of Interest Database | |
File extension OVA | Open Virtual Appliance | |
File extension OVE | Overture Musical Score | |
File extension OVF | Open Virtualization File | |
File extension OVL | Rollercoaster Tycoon 3 Data File | |
File extension OVP | The Overlay Maker Package File | |
File extension OVPN | OpenVPN Configuration File | |
File extension OVR | The Overlay Maker Overlay File | |
File extension OVW | Logic Pro Overview File | |
File extension OW | Free Pascal 1.0.x Object File | |
File extension OWC | OutWit Catch Database | |
File extension OWG | OutWit Gear Database | |
File extension OWL | OWL Source Code File | |
File extension OWM | OutWit XML Mashup File | |
File extension OXPS | OpenXPS File | |
File extension OXT | Apache OpenOffice Extension | |
File extension OXYGENE | Oxygene Project File | |
File extension OYX | Approach Alternate Database Index | |
File extension OZ | Opera Job Management Compressed File |