The file extension list you requested is shown on this page. It loads as a table so please give it a moment as some of the lists are quite long. These lists contain basic information: the extension, the name of the program it works with, the specific function of the file, and the company that makes the program. Not all extensions have all of the data. Click on the extension of interest to see the detail page for that extension. Total extensions in this particular list: 522.
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| Extension |
Information |
| O |
UNIX/GCC Object File |
| O |
Object File |
| O |
Free Pascal Object FIle for Linux or DOS Version (FPC Development Team) |
| O |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| O |
Xcode Compiled Core C or Assembler Program (Apple Inc.) |
| O |
Executable and Linkable Format File |
| O |
Origin C Compiled Program File (OriginLab Corporation) |
| O$$ |
Output File |
| O$$ |
Sprint Outfile |
| O01 |
Typhoon Voice File |
| O1 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| O1 |
Free Pascal Object File for GO321v1 Platform (FPC Development Team) |
| O2C |
Objects to See 3D File Format (mb Software AG) |
| O3 |
Ozone Messenger Program Support Files (htmlland.net) |
| O8O |
Mediator5 Repositorytabs Vorlagen.006 File |
| OAB |
Outlook Address Book (Microsoft Corporation) |
| OAF |
Flight Simulator Texture File (Microsoft Corporation) |
| OAF |
Outrage Animation Rows |
| OAF |
ETH Oberon Applet File |
| OAH2DSK |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OARC |
Optix Archive Bundle (mindwrap, inc.) |
| OARC |
Optix Archive Manifest (mindwrap, inc.) |
| OAZ |
NetFax Manager OAZ Fax File |
| OB |
ABF Outlook Backup Backup File (ABF software, Inc.) |
| OB |
IMB LinkWay Object File |
| OB! |
Orbit Downloader Incomplete Download (OrbitDownloader.com) |
| OB$ |
Compressed OBJ (Microsoft Corporation) |
| OB1 |
OzWin CompuServe E-mail/Forum Access Saved Outbox File |
| OB3 |
Outlook Backup Full Backup File (ABF software, Inc.) |
| OB3 |
ORTIM Zeit Data (ORTIM Industrial Engineering Deutschland GmbH) |
| OBA |
Timespace X100 Digital Video Recorder Video File (Timespace Technology Ltd.) |
| OBD |
Oracle Forms Online Help File (Oracle) |
| OBD |
Office Binder Document (Microsoft Corporation) |
| OBE |
Out Of Box Experience |
| OBE |
System DLL Oobe File |
| OBJ |
Relocatable Object Code |
| OBJ |
Hyperion-CADRazor 3D Model (TITAN Algorithms) |
| OBJ |
UVMapper Object (Stephen L Cox) |
| OBJ |
Metatools Object Bryce Support File |
| OBJ |
Wavefront 3D Object |
| OBJ |
LightWave 3D Object (NewTek) |
| OBJ |
Blender 3D Object (The Blender Foundation) |
| OBJ0 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OBJ1 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OBJECTS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OBK |
Ubi Soft Chessmaster Opening Book File |
| OBK |
Oxygen Phone Manager Phone Book (Oxygen Software) |
| OBML |
Opera Mini Saved Web Page (Opera Software ASA) |
| OBN |
Oberon-2 Module Source File |
| OBP |
Bryce 5 Object Preset (DAZ Productions) |
| OBPACK |
ObjectBar Object Package (Stardock Corporation, Inc.) |
| OBR |
C++ Object Browser Data File (Borland Software Corporation) |
| OBR |
Objective Reference Document Link (Objective Corporation Limited) |
| OBS |
ObjectScript Script |
| OBS |
OzWin CompuServe E-mail/Forum Access Saved Outbox File |
| OBSKIN |
ObjectBar Skin File (Stardock Corporation, Inc.) |
| OBT |
Office Binder Template (Microsoft Corporation) |
| OBTHEME |
ObjectBar Theme File |
| OBTHEME |
ObjectBar Theme File (Stardock Corporation, Inc.) |
| OBV |
ObjectScript Visual Interface |
| OBW |
Superior Drummer 2.0 Superior Drummer 2.0 (TOONTRACK) |
| OBX |
OpenBook OpenBook 8.0 Document File (Freedom Scientific, Inc) |
| OBX |
Rational XDE (IBM) |
| OBZ |
Office Binder Wizard (Microsoft Corporation) |
| OC8 |
OrgCon 8 Organization (EcoMerc) |
| OC9 |
OrgCon 9 Organization (EcoMerc) |
| OCA |
Visual Basic Control Typelib Cache |
| OCA |
OLE Custom Control Library Information |
| OCA |
Control Typelib Cache (Microsoft Corporation) |
| OCB |
Origin Precompiled Origin C File (OriginLab Corporation) |
| OCC |
OptControlCentre Model File |
| OCC |
DB/TextWorks Database Terms and Words (Inmagic, Inc.) |
| OCCSAN |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OCD |
OrgCon 7 Organization (EcoMerc) |
| OCD |
OCAD Digitized Map (Steinegger Software) |
| OCE |
Brio Query (Hyperion Solutions Corporation) |
| OCEN |
EdGCM Data File (The EdGCM Cooperative Project of Columbia University) |
| OCF |
Object Craft File |
| OCF |
OM2Cipher File |
| OCI |
openCanvas Image (System Products Co., Ltd.) |
| OCM |
Internet Odyssey 2 Update |
| OCM |
AOL Advertising Control File (America Online, Inc.) |
| OCM |
Netscape Communicator Aim File |
| OCN |
OneCable.net - Explorer Measurement Data File (OnTimeLine) |
| OCP |
Advanced Art Studio |
| OCP |
Offline Commander Project File |
| OCR |
FAXGrapper FAX Text File |
| OCS |
eDoc DigiSign Digitally Signed Document (Fujitsu Denmark) |
| OCSP |
Optix Scanner Plug-in (mindwrap, inc.) |
| OCT |
Radiance Octree Format |
| OCT |
Octalizer Musical File |
| OCTOPUSFONT |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OCX |
Object Linking and Embedding (OLE) Control Extension (Microsoft Corporation) |
| OC_ |
Doko Compressed Install File |
| OD1 |
Omnis5 Database File |
| OD2 |
Omnis5 Database File |
| OD3 |
Omnis5 Database File |
| OD4 |
Omnis5 Database File |
| OD5 |
Omnis5 Database File |
| OD6 |
Omnis5 Database File |
| OD7 |
Omnis5 Database File |
| OD8 |
Omnis5 Database File |
| OD9 |
Omnis5 Database File |
| ODA |
ODA Document |
| ODA |
CALS Group IV Type 2 Raster Image |
| ODA |
AIBO Audio Voice (Sony) |
| ODA |
Used with OCX |
| ODB |
Abaqus/CAE Binary Output File (Dassault Systèmes) |
| ODB |
Organizers Database (ODB) Database (Organizers' Collaborative) |
| ODB |
Psion Organiser Datafile and LZ Diary File (Psion PLC) |
| ODB |
ArcView Object Database ASCII File (ESRI) |
| ODB |
OpenOffice/StarOffice OpenDocument (Ver 2) Database (Sun Microsystems, Inc.) |
| ODB |
ABAQUS File (ABAQUS, Inc.) |
| ODC |
Office Data Connection |
| ODC |
OpenOffice/StarOffice OpenDocument (Ver 2) Chart (Sun Microsystems, Inc.) |
| ODCCUBEFILE |
Office Data Connection |
| ODCDATABASEFILE |
Office Data Connection |
| ODCNEWFILE |
Office Data Connection |
| ODCTABLEFILE |
Office Data Connection |
| ODD |
Coby Voice Recorder Format (Coby Electronics Corp.) |
| ODDS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ODE |
Office Object Data Embedding File (Microsoft Corporation) |
| ODF |
BattleZone Cartographers Guild File |
| ODF |
OnkoS Data (OnkoS) |
| ODF |
Open Document Interchange (ODIF) |
| ODF |
OpenOffice/StarOffice OpenDocument (Ver 2) Formula (Sun Microsystems, Inc.) |
| ODF |
Star Trek Armada Ship/Structure Infomation |
| ODG |
OpenOffice/StarOffice OpenDocument (Ver 2) Graphics Document (Sun Microsystems, Inc.) |
| ODH |
Odigo History File (Comverse, Inc. a part of Comverse Technology) |
| ODI |
OpenOffice/StarOffice OpenDocument (Ver 2) Image (Sun Microsystems, Inc.) |
| ODIF |
Open Document Interchange Format |
| ODL |
Visual C++ Type Library Source (Interface Definition Language File) (Microsoft Corporation) |
| ODL |
Object Definition Language |
| ODM |
OpenOffice/StarOffice OpenDocument (Ver 2) Global Text Document (Sun Microsystems, Inc.) |
| ODM |
OverDrive Media Console Media Control File (OverDrive Inc.) |
| ODM |
Opendisc Software (Opendisc) |
| ODMP |
Optix Collection Package (mindwrap, inc.) |
| ODOCK |
ObjectDock Theme (Stardock Corporation) |
| ODP |
Oedipus |
| ODP |
OpenOffice/StarOffice OpenDocument (Ver 2) Presentation (Sun Microsystems, Inc.) |
| ODP |
Analytics Parameters for Analysis Services (Actuate Corporation) |
| ODS |
OpenOffice/StarOffice OpenDocument (Ver 2) Spreadsheet (Sun Microsystems, Inc.) |
| ODS |
Outlook Express Mailbox (Microsoft Corporation) |
| ODS |
NCompass Labs Internet Script |
| ODS# |
OpenOffice/StarOffice OpenDocument (Ver 2) Open Spreadsheet (Sun Microsystems, Inc.) |
| ODT |
OpenOffice/StarOffice OpenDocument (Ver 2) Text Document (Sun Microsystems, Inc.) |
| ODT |
MindRender Virtual Reality Explorer Kit (VREK) Object File Format (Themekit Systems Ltd.) |
| ODU |
Odigo User File (Comverse, Inc. a part of Comverse Technology) |
| ODZ |
IBM OpenDoc Editor Package File |
| OEB |
Open eBook Document (International Digital Publishing Forum (IDPF)) |
| OEB |
Outlook Express Backup Wizard |
| OEM |
Text Listing of Supported OEM Devices for WinNT |
| OEM |
SB_AWE Keys SB_NT File |
| OEM |
OEM Data Used During Device Install |
| OF |
Audio Utility Tuningwrench Compressed File |
| OF |
LessDATA Video System OneFile File |
| OF |
MicroImages Outline Font (MicroImages, Inc.) |
| OFASTER |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OFC |
Open Financial Connectivity File |
| OFD |
OfficeForms Form Data File (Toplevel Computing) |
| OFD |
ObjectView Form Defintion |
| OFD |
20-20 Office Sales E-magine File (20-20 Technologies) |
| OFF |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OFF |
Vector Graphic |
| OFF |
3D Mesh Object File Format |
| OFFENSE |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OFFICES |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OFL |
OtsTurntables Playlist (Ots Labs) |
| OFM |
Font (Adobe Systems Incorporated) |
| OFM |
OfficeForms Blank Form File (Toplevel Computing) |
| OFM |
Embroidery Design File |
| OFM |
PostScript Font Description File |
| OFM |
OmniForm Form File (Nuance Communications, Inc.) |
| OFN |
Systems Management Server (SMS) Offer Creation Notification (Microsoft Corporation) |
| OFN |
Office FileNew File (Microsoft Corporation) |
| OFR |
OptimFROG Encoded Audio (Florin Ghido) |
| OFR |
Systems Management Server (SMS) Offer Description File (Microsoft Corporation) |
| OFT |
Outlook Item Template (Microsoft Corporation) |
| OFW |
Toplevel Forms Form (Toplevel Computing Ltd) |
| OFX |
Open Financial Exchange File |
| OFX |
Olicom Fax |
| OGA |
Ogg Vorbis Audio Profile (Xiph.Org Foundation) |
| OGF |
OnkoS Graphic File (OnkoS) |
| OGF |
Outrage Graphic Rows |
| OGF2 |
MapViewGPS Map Coordinates File |
| OGF3 |
MapViewGPS Map Coordinates File |
| OGG |
Ogg Vorbis Codec Compressed Multimedia File (Xiph.Org Foundation) |
| OGG |
Origin Graphic File (OriginLab Corporation) |
| OGG |
Salt Lake City Game File |
| OGI |
OpenPBX Gateway Interface File (OpenPBX.org) |
| OGL |
Overlay Source Code |
| OGM |
Ogg Vorbis Compressed Video File |
| OGM |
Origin Matrix File (OriginLab Corporation) |
| OGNC |
Web Page Source Code |
| OGO |
Origin Pro Graphic Object File (OriginLab Corporation) |
| OGS |
Origin Script File (OriginLab Corporation) |
| OGV |
Ogg Vorbis Video Profile (Xiph.Org Foundation) |
| OGV |
Theora Ogg Transport Stream Video File (Xiph.Org Foundation) |
| OGW |
Origin Worksheet File (OriginLab Corporation) |
| OGX |
C++ Component Gallery Exported Classes and Resources (Borland Software Corporation) |
| OGX |
Ogg Vorbis Multiplex Profile (Xiph.Org Foundation) |
| OH |
Overhoor ( DrillAssistant) List (Efkasoft) |
| OH4 |
Overhoor ( DrillAssistant) List (Efkasoft) |
| OHC |
OpenHelp Table of Contents File (Borland Software Corporation) |
| OHI |
OpenHelp Index (Borland Software Corporation) |
| OHL |
OpenHelp Link (Borland Software Corporation) |
| OHP |
DOS 7 File |
| OHP |
OpenHelp Project File (Borland Software Corporation) |
| OHS |
Bink Outbound History |
| OHSD |
HealthFrame OpenHealth Service Plug-in (Records For Living, Inc.) |
| OHW |
Overhoor ( DrillAssistant) List (Efkasoft) |
| OID |
ProCurve Manager Non-ProCurve Network Device File (Hewlett-Packard Development Company, L.P.) |
| OID |
Prosa/OM Object Interaction Diagram |
| OIF |
QuickBase Web-sharable Database Interchange File |
| OIK |
Lenné3D Plant Distribution File (Lenné3D GmbH i.G.) |
| OIL |
Open Image Library Format |
| OIT |
SleepScan and Ceegraph Offset Index File (Bio-logic Systems Corp.) |
| OIX |
Lenné3D Plant Distribution File (Lenné3D GmbH i.G.) |
| OJP |
3WayPack (The Three-Mode Company) |
| OK |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OK |
Dot OK File Digest (John Oberschelp) |
| OKM |
OkMap Map Defining File (Gian Paolo Saliola) |
| OKS |
OKScript File (Mike Mardesich) |
| OKT |
Oktalyzer Tracker Module |
| OKX |
OKScript File (Mike Mardesich) |
| OLB |
Medical Terminology Challenge Data File (Delmar Learning) |
| OLB |
PSpice Capture Symbols Models (Cadence Design Systems, Inc.) |
| OLB |
VAX Object Library |
| OLB |
Automation Object Library (Microsoft Corporation) |
| OLB |
OrCAD PSpice Capture Symbols Model (Cadence Design Systems, Inc.) |
| OLB |
AUTOGEN |
| OLD |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OLD |
Old Version |
| OLDEST |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OLE |
Object Linking and Embedding (OLE) Object |
| OLF |
OyezForms Legal Documents (UK) (Oyez) |
| OLG |
OATS Log File (AmsterCHEM) |
| OLI |
Olivetti Text File |
| OLK |
MS Mail Mailbag Lock |
| OLK |
Outlook Address Book (Microsoft Corporation) |
| OLL |
TrialDirector Load File (inData Corporation) |
| OLL |
TrialDirector Object Load List |
| OLLIEFONT |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OLN |
Visual C++ Outline Examples (Microsoft Corporation) |
| OLR |
Openlab Raw Format (Improvision) |
| OLRW |
Openlab Raw Format (Improvision) |
| OLSR |
olsrd Configuration (olsr.org) |
| OLT |
Orbit Downloader List File (OrbitDownloader.com) |
| OLT |
Visual C++ Outline Examples (Microsoft Corporation) |
| OLV |
OyezForms Legal Documents (UK) (Oyez) |
| OLV |
OnLive! Traveler Sound File (The Digital Space Commons) |
| OM |
Omicron Compiler File |
| OMA |
Sony OpenMG Music Format File (Sony Corporation of America) |
| OMB |
Omnibus Offline Web Storage (Alfega Technologies, Inc.) |
| OMCS |
Office Manager Enterprise Document Archive (Softwarebuero Krekeler) |
| OMD |
Prosa/OM Class Model |
| OMF |
Open Media Format File |
| OMF |
Operation, Management & Finance Database (ENIAC Computing) |
| OMG |
O&O DiskImage Disk Image (O&O Software GmBH) |
| OMG |
OpenMG Jukebox (Sony) |
| OMN |
Omnipotent, Inc. Collection File |
| OMO |
Oracle Media Objects File |
| OMOD |
Oblivion Mod Manager Oblivion Mod Manager |
| OMP |
Office Manager Pro Document Archive (Softwarebuero Krekeler) |
| OMP |
OpenMind Project (MatchWare A/S) |
| OMS |
Macintosh MP3 Music Format |
| OMS |
Briggs Softworks Order Maven |
| OMS |
Omega Downloader Configuration File |
| OMX |
Ots Media Library (Ots Labs Pty Ltd) |
| OMX |
OMAX Make Tool Path File (OMAX Corporation) |
| ON |
Audio Utility Tuningwrench Compressed File |
| ON |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OND |
Notes Database (IBM) |
| ONE |
OneNote Note File (Microsoft Corporation) |
| ONE |
docPointer Visual ReadMe File (docPointer) |
| ONE |
SEMONE Compressed Archive |
| ONE |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ONE |
EdgeCAM Licensing Data Ffile (Pathtrace Engineering Systems) |
| ONF |
Open Navigation Format File |
| ONLINE |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ONX |
Onyx Graphics Postershop File |
| OO |
Free Pascal Object File for OS/2 Version (FPC Development Team) |
| OOM |
Shroom Swap File |
| OOP |
OOP Packer Archive (TonyTown Software Ltd.) |
| OP |
Rescue Disk File |
| OP |
Origin Preprocessed Origin C File (OriginLab Corporation) |
| OP2 |
NEi Nastran Binary Results Neutral File (Noran Engineering, Inc.) |
| OP2 |
Outpost 2 Saved Game |
| OP2 |
Stanford Research Systems Optimlelt File (Stanford Research Systems, Inc.) |
| OP2 |
Musplay 1.72 File |
| OP73 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPA |
Psion OPL Object File (Psion PLC) |
| OPC |
Beta 44 Job File |
| OPC |
Office Upgrade Control File (Microsoft Corporation) |
| OPC |
Omron OPC Client File |
| OPD |
OmniPage Document (Nuance Communications, Inc.) |
| OPD |
Durango Interferometry Software Document (Diffraction International) |
| OPEN |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPENYOURMIND |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPF |
Flip Album File |
| OPF |
Obsidium Project File (Obsidium Software) |
| OPF |
Gemstar eBook Publisher Package (Gemstar eBook) |
| OPF |
KEPServerEX Project Configuration File (Kepware Technologies Inc.) |
| OPF |
Visual OMP Project File (DNA Software, Inc.) |
| OPI |
OmniPass Exported User (Softex, Inc.) |
| OPI |
ExpressRecognition Server OCR Processing Information File (Adlib Software) |
| OPJ |
OmniPage Schedule (Nuance Communications, Inc.) |
| OPJ |
OrCAD Project File (Cadence Design Systems, Inc.) |
| OPJ |
Origin Project File (OriginLab Corporation) |
| OPK |
Origin Origin Pack File (OriginLab Corporation) |
| OPL |
Psion Organiser Programming Language Source File (Psion PLC) |
| OPM |
Quadrox Digital CCTV System Components |
| OPML |
Outline Processor Markup Language |
| OPN |
Strip Poker Deluxe Opponent File (Eagle Rock Enterprises, Inc.) |
| OPN |
Court Opinion File (Tennessee Administrative Office of the Courts) |
| OPN |
Rebel Strip Poker Opponent File (Rebel Software) |
| OPN |
Exact Active Options |
| OPO |
Psion OPL Output Executable File (Psion PLC) |
| OPO |
Psion Organiser OPL Code (Psion PLC) |
| OPOS |
VirtuaSys Opos Script (VirtuaSys :: Sistemas Virtuais) |
| OPP |
IPhoto File (Keronsoft) |
| OPR |
OPRO X Browser Print Report File (OPRO Japan Co.,Ltd.) |
| OPS |
Office Profile Settings File (Microsoft Corporation) |
| OPS |
Dynamite VSP Object Placement Style (3am Solutions (UK) Limited) |
| OPT |
Business Integrator Option File (Pervasive Software Inc.) |
| OPT |
Psion Organiser OPL Source (Psion PLC) |
| OPT |
Segue SilkTest Option Set File |
| OPT |
pcAnywhere Option Set File |
| OPT |
QEMM Optimize |
| OPT |
PhotoScore Document (Neuratron Ltd) |
| OPT |
FLEXnet Manager Options File (Acresso Software Inc.) |
| OPT |
Developer Studio File Workspace Options (Microsoft Corporation) |
| OPT |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPT |
Delphi Project Options (Borland Software Corporation) |
| OPT |
ProWORX Nxt List Module Option File (Schneider Electric) |
| OPT |
Options/Configuration |
| OPTIONAL |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPTNS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPUS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OPW |
OrgPlus Organization Chart (HumanConcepts, LLC) |
| OPX |
OrgPlus Organization Chart (HumanConcepts, LLC) |
| OPX |
Psion Organiser Programming Language (Psion PLC) |
| OPX |
OrgChart Organization Diagram (Microsoft Corporation) |
| OPX |
OPL Extension DLL |
| OPX |
Flip Album File |
| OPX |
Exact Inactive Options |
| OPY |
OptiY Model (OptiY) |
| OQY |
Excel OLAP Query File (Microsoft Corporation) |
| OR |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OR2 |
Organizer Ver 2 File (IBM) |
| OR3 |
Organizer 97 File (IBM) |
| OR4 |
Organizer (IBM) |
| OR5 |
Organizer (IBM) |
| OR6 |
Organizer Data File (IBM) |
| OR8 |
Rational Rose Oracle8 Database Model Report (IBM) |
| ORA |
Oracle 7 Configuration |
| ORA |
MyPaint Open Raster Image File (Open Raster) |
| ORC |
cSound Synthesis Instruments (Csounders) |
| ORC |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ORC |
Oracle 7 Script |
| ORC |
Digital Orchestrator Plus Sound File (Voyetra Turtle Beach, Inc.) |
| ORCA |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ORD |
BC45 Owl File |
| ORD |
Open Reminder Database (ITOpen.eu SOFTWARE) |
| ORD |
OMAX Make Tool Path File (OMAX Corporation) |
| ORE |
3WayPack (The Three-Mode Company) |
| ORE |
Narbacular Drop Game Content (DigiPen Corporation) |
| ORF |
Olympus Digital Camera Raw Image File |
| ORF |
Descent 3 Outrage Room Format |
| ORG |
Microcal Origin Plot |
| ORG |
Hollywood FX Effects Organizer File (Pinnacle Systems, Inc.) |
| ORG |
Odds Ratio Generator Data File (Psytek Ltd.) |
| ORG |
Netmino File |
| ORG |
Origin File (OriginLab Corporation) |
| ORG |
Organiser (IBM) |
| ORG |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ORG |
Yamaha Organ Flutes (Yamaha Corporation of America) |
| ORGAN |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ORI |
Original |
| ORI |
Need for Speed-Hot Pursuit 2 File |
| ORIG |
Gen Original File |
| ORIG |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| ORIGINAL |
Netobjects Fusion Components BBScomp Message File |
| ORK |
Warhammer: Mark of Chaos Game Archive (Games Workshop Group PLC) |
| ORM |
Ormetis Workbench File (Ormetis S.A.S.) |
| ORMV |
Ormetis View File (Ormetis S.A.S.) |
| ORO |
3WayPack (The Three-Mode Company) |
| ORV |
Oracom Video Format (Oracom Co. Ltd.) |
| OS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OS2 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OS3 |
OS/2 Warp 3 File |
| OSA |
W32/Sober-AD |
| OSB |
Sega Dreamcast Sound (One Shot Bank) (Sega of America, Inc.) |
| OSC |
OptionScope Worksheet (Equis International) |
| OSC |
Formula One 2001 Options File |
| OSC |
Fruitypro Samples SS_effects File |
| OSC |
Remote Installation Services Client Installation Wizard File (Microsoft Corporation) |
| OSD |
Directory Opus Configuration File (GPSoftware) |
| OSD |
Open Software Description File (Microsoft Corporation) |
| OSD |
SoftGrid Program Description (Softricity, Inc.) |
| OSDX |
Windows Search Connector (Microsoft Corporation) |
| OSF |
Distribution Bin File |
| OSF |
Opera Skin (Opera Software ASA) |
| OSF |
ICZ OriSAFE |
| OSF |
Virtual Ticket (MetaCommunications) |
| OSF |
Descent 3 Sound File (Outrage Entertainment) |
| OSG |
OpenSceneGraph ASCII Native Format (OSG Community) |
| OSI |
Osiris Database (The Shmoo Group) |
| OSI |
SunNet OSI Description File (Sun) |
| OSL |
OckamSoft Log File (Ockam Instruments, Inc.) |
| OSMALLER |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OSp |
On-Screen Takeoff (On Center Software, Inc.) |
| OSS |
Office Saved Search (Microsoft Corporation) |
| OST |
Tivoli Storage Manager File (IBM) |
| OST |
On-Screen Takeoff Project (On Center Software, Inc.) |
| OST |
Outlook Offline Storage File (Microsoft Corporation) |
| OST |
Exchange Offline Cache (Microsoft Corporation) |
| OSTANDARD |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OT |
OpenTeacher Word list (OpenTeachers Maintainers) |
| OTB |
Nokia Phone Graphics Editor (Nokia) |
| OTB |
On-the-air Bitmap |
| OTC |
OpenOffice/StarOffice OpenDocument (Ver 2) Chart Template (Sun Microsystems, Inc.) |
| OTF |
Blu-ray Text Subtitle Font Information (Blu-ray Disc Association) |
| OTF |
Open Type Font Format |
| OTF |
OpenOffice/StarOffice OpenDocument (Ver 2) Formula Template (Sun Microsystems, Inc.) |
| OTF |
OnkoS Text Data File (OnkoS) |
| OTG |
OpenOffice/StarOffice OpenDocument (Ver 2) Graphics Document Template (Sun Microsystems, Inc.) |
| OTH |
Power Toys Other Folder Explorer Tool |
| OTH |
Origin Graph Properties File (OriginLab Corporation) |
| OTH |
OpenOffice/StarOffice OpenDocument (Ver 2) HTML Text Template (Sun Microsystems, Inc.) |
| OTHERFOLDER |
Power Toys Other Folder Explorer Tool |
| OTHERS |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OTI |
OpenOffice/StarOffice OpenDocument (Ver 2) Image Template (Sun Microsystems, Inc.) |
| OTL |
Fookes Super NoteTab Template File |
| OTL |
NoteTab Outline |
| OTL |
OpenTrap Event Log |
| OTL |
Ventura Publisher's Type Foundry Outline Editor format |
| OTL |
Z-Soft Type Foundry Font |
| OTM |
Micro Cookbook File (IMSI/Design LLC) |
| OTM |
Outlook VBA Module (Microsoft Corporation) |
| OTM |
Origin Matrix Template File (OriginLab Corporation) |
| OTM |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OTM2 |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OTN |
OmniPage Training File (Nuance Communications, Inc.) |
| OTO |
Autopano Project (Alexandre Jenny) |
| OTOSET |
OTOsuite Settings (GN Otometrics) |
| OTP |
OpenOffice/StarOffice OpenDocument (Ver 2) Presentation Template (Sun Microsystems, Inc.) |
| OTP |
Top Secret Crypto Gold One Time Pad Key File (TAN$TAAFL Software Company) |
| OTP |
Origin Graphic Template File (OriginLab Corporation) |
| OTRKEY |
OnlineTvRecorder Encoded Video (OnlineTvRecorder.com) |
| OTS |
PSR-9000 (Yamaha Corporation of America) |
| OTS |
OpenOffice/StarOffice OpenDocument (Ver 2) Spreadsheet Template (Sun Microsystems, Inc.) |
| OTS |
OtsJuke Sound File |
| OTT |
OpenOffice/StarOffice OpenDocument (Ver 2) Text Document Template (Sun Microsystems, Inc.) |
| OTT |
Nokia Phone Ring Tone (Nokia) |
| OTW |
Origin Worksheet Template File (OriginLab Corporation) |
| OTX |
Olivetti Olitext Plus File |
| OU! |
OzWin CompuServe E-mail/Forum Access Outbound Messages Online |
| OUD |
Adlib ExpressRecognition Server User Defined Dictionary (Adlib Software) |
| OUT |
NovaBACKUP Backup Set (NovaStor Corporation) |
| OUT |
3WayPack (The Three-Mode Company) |
| OUT |
Wireshark Traffic Log (Gerald Combs) |
| OUT |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OUT |
PSpice Output File (Cadence Design Systems, Inc.) |
| OUT |
MyInfo Documnet/Outline (Milenix Software) |
| OUT |
NEi Nastran Tabular Output File (Noran Engineering, Inc.) |
| OUT |
Pro/ENGINEER Temporary File (PTC) |
| OUT |
PSS/E (siemens) |
| OUT |
OzWin CompuServe E-mail/Forum Access Outbound Messages |
| OUT |
Outlines or Output File |
| OUTPUT |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OUV |
Sphinx Open Ended Responses (Le Sphinx Développement) |
| OUX |
PCCharge File (VeriFone) |
| OV |
OpenInsight Database Overflow File (Revelation Software) |
| OV |
OrgPlus OrgViewer File (HumanConcepts, LLC) |
| OV1 |
Program File - Overlay |
| OV2 |
Program File - Overlay |
| OV2 |
TomTom Point of Interest File (TomTom International BV) |
| OV3 |
Program File - Overlay |
| OVA |
Sierra Web Studio Graphic |
| OVA |
Web Studio Project Page (Back To The Beach Software, LLC) |
| OVB |
OnkoS Vocabulary Backup File (OnkoS) |
| OVD |
ObjectVision Datafile (Application) (Borland Software Corporation) |
| OVD |
OverDisk Disk Use Database (Elias Fotinis) |
| OVE |
Cakewalk Overture Score (Cakewalk) |
| OVER |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OVL |
RollerCoaster Tycoon Program Sprite (Infogrames Entertainment SA) |
| OVL |
Program File - Overlay |
| OVL |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OVL |
PDP-10 Overlay (Pre-Virtual Memory) |
| OVLDEF |
Gestionnaire d'extensions Overload Definition (Définition de surcharge) (Francis Gagné) |
| OVM |
BHV Tonstudio Platin File |
| OVR |
Program File - Overlay |
| OVW |
DIANA Overview File |
| OVW |
Cubase .WAV File Image (Steinberg) |
| OVW |
Cool Edit Pro Overview File |
| OVX |
Psion Oval Control (Psion PLC) |
| OW |
Free Pascal Object File for Windows Version (FPC Development Team) |
| OWC |
OutWit Hub OutWit Catch db Format (OutWit Technologies) |
| OWD |
OpenWire Project |
| OWF |
OnkoS Wave Data File (OnkoS) |
| OWG |
OutWit Hub OutWit Gear db Format (OutWit Technologies) |
| OWL |
BC45 Owl File |
| OWLING |
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| OWM |
OutWit Hub OutWit Mashup XML Format (OutWit Technologies) |
| OWS |
Web Studio Project File (Back To The Beach Software, LLC) |
| OX |
Ox Object-Oriented Matrix Programming Language File |
| OXB |
OlapX Report Portfolio (OlapX Software) |
| OXC |
OlapX Cube Definition File (OlapX Software) |
| OXL |
OMEGA Product Suite File |
| OXO |
Ox Object-Oriented Matrix Programming Language File |
| OXO |
DB-MAIN Compiled Voyager-2 Program |
| OXT |
OpenOffice.org Extension (OpenOffice.org Community) |
| OXV |
OlapX Local View File (OlapX Software) |
| OYB |
Organize Your Beanie Babies Data File |
| OYZ |
Lotus Approach Alternate dBASE Index |
| OZF |
Mozart Programming System Functor (Mozart Board) |
| OZF2 |
OziExplorer Map (Des & Lorraine Newman) |
| OZFX3 |
OziExplorer Image File (Des & Lorraine Newman) |
| OZM |
Sharp Organizer Memo Bank |
| OZP |
Sharp Organizer Telephone Bank |
| OZV |
ORTIM Zeit Project (ORTIM Industrial Engineering Deutschland GmbH) |
If you need to see another list, please select here...
