Home
Add Extension
Edit Extension
Articles
FAQ
Contact Us
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
OTHER
O FILE EXTENSIONS
Listing of file extensions starting with the letter O
Sort by
Extension
Popularity
Popularity
.O - Object file
.O$$ - Outfile
.O01 - Typhoon Voice File
.O2C - AMglossar images file
.O3DTGZ - O3D TGZ GZipped File
.O7$3 - Omnis
.O8O - Mediator5 Repositorytabs Vorlagen.006 file
.OAB - MS Outlook Address Book
.OAS - Word processor document
.OAZ - NetFax Manager Fax File
.OB - Object cut/paste file
.OB! - Orbit Downloader Incomplete Download
.OB$ - Microsoft Compressed Object
.OBD - Binder template
.OBD - Binder
.OBE - System Dll Oobe file
.OBI - Outlook RSS Subscription File
.OBJ - Relocatable Object Code
.OBJ - Lightwave 3D Object
.OBJ_ - Object File
.OBK - OrCAD Capture Design/Library
.OBR - Object browser data file
.OBS - Script
.OBT - MS Office Binder Template
.OBV - Visual interface
.OBY - EPOC : ROM image
.OBZ - Binder Wizard
.OCA - Visual Basic control typelib cache
.OCA - OLE Custom Control Library Information
.OCDC - Mathematica Document
.OCF - Object craft file
.OCM - Netscape Communicator Aim file
.OCP - Advanced Art Studio image format
.OCR - FAXGrapper Fax-to-Text File
.OCT - Musical file (Octalizer)
.OCX - Microsoft Object Linking and Embedding Custom Cont
.OC_ - Doko Compressed Install File
.OD1 - Omnis5 Database File
.OD2 - Omnis5 Database File
.OD3 - Omnis5 Database File
.OD4-9 - Omnis5 Database File
.ODA - Used with OCX
.ODA - Raster image (CALS Group IV Type 2)
.ODA - ODA document
.ODB - ArcView : Object Database ASCII file (ODB format)
.ODC - Office Data Connection
.ODC - OpenOffice/StarOffice OpenDocument Chart
.ODE - Microsoft Office file
.ODEX - Google Android Optimized Executable File
.ODF - Open Document Interchange Format (ODIF)
.ODG - OpenDocument Drawing
.ODH - Object Definition Head
.ODI - OpenDocument Image
.ODIF - Open Document Interchange Format
.ODL - Type library source
.ODM - OpenDocument Master Document
.ODM - OverDrive Media File
.ODP - OpenDocument Presentation
.ODS - Outlook Express Mailbox file
.ODS - Open Document Spreadsheet
.ODT - Virtual Reality Explorer Kit Object File Format
.ODT - OpenOffice/StarOffice OpenDocument (V.2) Text Doc
.ODVI - LaTeX Filea Documentactex
.ODX - BizTalk Server Orchestration File
.OD_ - Oracle driver, .DLL compressed
.OEACCOUNT - Windows Media Account
.OEB - Outlook Express Backup Wizard File
.OECL - Microsoft Database Cache
.OEDB - Microsoft Email Databas
.OEM - Sb_awe keys Sb_nt file
.OF - Audio Utility Tuningwrench compressed file
.OFC - Open Financial Connectivity File
.OFD - Form definition
.OFF - Object File
.OFL - OtsAV PlayList File
.OFM - PostScript Font Description
.OFM - Embroidery Design File
.OFN - FileNew file
.OFT - Outlook Template
.OFX - Olicom Fax Image Format
.OGA - Ogg Vorbis Audio
.OGC - Organica doc
.OGG - Ogg Vorbis Codec Compressed WAV File
.OGL - Overlay source code
.OGL - Objective Grid Layout
.OGLE - Picture Viewer
.OGM - Ogg Vorbis Compressed Video File
.OGM - Origin Matrix File
.OGNC - Dynamic Web Page
.OGS - Origin LabTalk Script File
.OGV - Ogg Vorbis Video
.OGX - OGG Vorbis Multiplexed Media File
.OHP - Dos7 file
.OHS - Outbound History (Bink/+)
.OID - Object Interaction Diagram (Prosa/OM)
.OIF - QuickBase Web-sharable Database Interchange File
.OIL - Open Image Library Format image format
.OJP - 3WayPack File
.OK - QEDIT file
.OKR - Feldeinteilung module file
.OKT - Music module
.OLA - Online Access File
.OLB - Object Library
.OLB2 - CanOpener Library
.OLD - Backup File (Generic)
.OLE - Object Linking and Embedding
.OLG1 - Lynx
.OLI - Text file
.OLK - Microsoft Mail Mailbag Lock
.OLN - MS Visual C++ Outline examples
.OLT - MS Visual C++ Outline examples
.OLTB - OLE Types
.OL_ - green_line file
.OMA - Sony OpenMG Audio File
.OMC - Atrac3
.OMCS - Office Manager Access File
.OMD - Class model (Prosa/OM)
.OMEG - Mathematica
.OMF - Avid video editor interchange data
.OMG - OpenMG Audio File
.OMO - OMake Object File
.OMP - Office Manager Document Archive
.OMX - OtsAV Media Library Information File
.OMX - OtsTurntables Audio Detail File
.ON - Audio Utility Tuningwrench compressed file
.OND - Lotus Notes Memo File
.ONE - OneNote Document
.ONEPKG - Data File
.ONG - Onglet
.ONLN - Apple DocViewer File
.ONPF - Apple DocViewer Prefs
.ONX - Onyx Graphics Postershop File
.OO1 - Voice file
.OO3 - OmniOutliner 3 File
.OOGL - Object Oriented Graphics Library
.OOM - Swap file
.OP - Rescue Disk file
.OP2 - Musplay 1.72 file
.OPA - Psion OPL object file
.OPC - Office Upgrade Control File
.OPD - OmniPage Document
.OPENGL - OpenGL Web site
.OPENTAG - OpenTag
.OPF - FlipViewer FlipBook File
.OPF - Open eBook File
.OPJ - Project file
.OPL - Organiser Programming Language source file
.OPML - Outline Processor Markup Language (OPML) File
.OPN - Active options
.OPN - FileOPEN Document Rights Management File
.OPO - Output executable file
.OPS - Microsoft Office Profile Settings File
.OPT - Developer Studio file
.OPT - Optimize support file
.OPW - Organization chart
.OPX - Office Organisation Chart
.OP_ - GKSetup support file
.OQY - MS Excel OLAP Query File
.OR2 - IBM Lotus Organizer (v2) File
.OR3 - IBM Lotus Organizer (v3) File
.OR4 - IBM Lotus Organizer (v4) File
.OR5 - IBM Lotus Organizer (v5) File
.OR6 - IBM Lotus Organizer (v6) File
.OR8 - Rational Rose Oracle8 database model report
.ORA - Parameter file
.ORA - Configuration file
.ORA - MyPaint Open Raster Drawing File
.ORC - Script
.ORD - Bc45 Owl file
.ORE - 3WayPack File
.ORF - A RAW Image File
.ORG - Lotus Organiser File
.ORG2+ - Lotus Organiser File
.ORI - Original File
.ORIG - Gen original file
.ORIGINAL - Netobjects fusion Components Bbscomp message file
.ORO - 3WayPack File
.ORT - Rich Text Editor Document
.ORX - RadiantOne VDS Database Schema
.OS2 - Os2 System file
.OS3 - Os2 Warp3 file
.OSAS - AppleScriptibrarytanlscpt
.OSAX - Scripting Additionanlosax
.OSC - Fruitypro Samples Ss_effects file
.OSD - driver file
.OSF - Dist Bin file
.OSP - CWCDATA file
.OSP - Open Stages Scenery File
.OSS - Search file
.OST - Microsoft Exchange/Outlook Offline File
.OSZ - OSU Beatmap File (Zipped)
.OTA - OTA Bitmap
.OTAN - Open Transport
.OTB - Nokia Over The Air Bitmap
.OTC - OpenDocument Chart Template
.OTF - OnkoS Text Data File
.OTF - OpenType Font Format
.OTF - OpenOffice/StarOffice OpenDocument Formula Template
.OTG - OpenDocument Graphic Template
.OTGL - Open Transport Prefs File
.OTH - MS Power Toys Explorer tool
.OTI - OpenDocument Image Template
.OTL - Outline font description
.OTL - Template file
.OTLN - Opal Outline File
.OTNC - Open Transport Prefs File
.OTP - Origin File(of originlab)
.OTS - OpenDocument Spreadsheet Template
.OTS - OtsAV Album File
.OTSL - Open Transport Library
.OTT - OpenDocument Text Document Template
.OTX - Text file
.OUT - Output file
.OUTLOOK97 - Outlook97 mail format for custom mail
.OV - Database file
.OV0 - Objective Voice E-mail for windows
.OV1 - Overlay file
.OV2 - Overlay file
.OVA - Octava Musical Score
.OVD - Datafile
.OVE - Cakewalk Overture Score
.OVF - Object Vision
.OVF - Open Virtualization File
.OVG - ObjectVision converted graphic file
.OVL - Overlay file
.OVL - Motorola Radio Programming File
.OVM - Bhv Tonstudio Platin file
.OVR - Overlay file
.OVW - Cubase WAVE File Overview
.OWL - Bc45 Owl file
.OWS - Oxford dictionary (oxford university press)
.OXR - Virus Safe Web Driver
.OXT - Audio mod OXX
.OXT - OpenOffice.org Extension
.OYX - Approach Alternate Database Index
.OYZ - Lotus Approach alternate dBASE index
.OZM - Sharp Organizer memo bank
.OZP - Sharp Organizer Telephone Bank
238
O
File Extensions Found
Sections
Developers
Software
Common Files
File Categories
3D/CAD
Audio
Backup
Compressed
Configuration
Data
Database
Developer
Disk Image
Encrypted
Executable
Font
Game
Image
Miscellaneous
Plugin
System
Text
Video
Web
