| # |
File extension |
Developer |
| 0 |
.O - Object Format |
N/A |
| 1 |
.O01 - Typhoon Voice |
FMJ-Software |
| 2 |
.O2C - Objects To See 3D |
N/A |
| 3 |
.O8D - OCTGN Deck |
N/A |
| 4 |
.O8G - OCTGN Game Definition |
N/A |
| 5 |
.O8O - Mediator 5 Repository Tabs Vorlagen.006 |
N/A |
| 6 |
.O8S - OCTGN Set |
N/A |
| 7 |
.OAB - Microsoft Outlook Offline Address Book Format |
N/A |
| 8 |
.OAD - Suite Notaro Document |
OA SISTEMI |
| 9 |
.OAF - Microsoft Flight Simulator Texture |
Microsoft Studios |
| 10 |
.OAM - Adobe Edge Overlay Format |
Adobe Systems |
| 11 |
.OAP - Samsung Bada Signed Installation Package |
Samsung Group |
| 12 |
.OAR - OpenSimulator Archive Format |
N/A |
| 13 |
.OAS - Microsoft Outlook Attachment Sniffer |
rsbr Software |
| 14 |
.OAT - Google Android RunTime Code |
Google Inc. |
| 15 |
.OAV - Microsoft Flight Simulator Texture |
Microsoft Studios |
| 16 |
.OAW - OpenArchitectureWare Workflow |
N/A |
| 17 |
.OAZ - NetFax Manager OAZ Fax Image |
N/A |
| 18 |
.OB - IBM LinkWay Object |
IBM |
| 19 |
.OB! - Orbit Downloader Incomplete Download Format |
Orbit Downloader |
| 20 |
.OB3 - ABF Software Outlook Backup Backup |
ABF software, Inc. |
| 21 |
.OB5 - TopLang OE Backup |
N/A |
| 22 |
.OBAK - WinSQL Offline Backup |
SYNAMETIRCS |
| 23 |
.OBB - Google Android Opaque Binary Blob Format |
Google |
| 24 |
.OBD - Microsoft Office Binder Document Format |
Microsoft |
| 25 |
.OBF - OsmAnd Offline GPS Vector Maps |
OsmAnd Development Project |
| 26 |
.OBG - ZBrush Mesh |
Pixologic, Inc. |
| 27 |
.OBI - Microsoft Outlook 2007/2010/2013 RSS Subscription Format |
Microsoft |
| 28 |
.OBJ - 3D Object Format |
Wavefront Technologies |
| 29 |
.OBJX - Metatools Object Bryce Support |
DAZ 3D Inc. |
| 30 |
.OBK - OrCAD Capture Design Or Library |
Cadence Design Systems, Inc. |
| 31 |
.OBL - TrueSpace |
Caligari Corporation |
| 32 |
.OBML - Opera Mini Saved Web Page Format |
Opera Software |
| 33 |
.OBML15 - Opera Mini 5.1 Saved Web Page |
Opera Software ASA |
| 34 |
.OBP - Bryce Object Format |
DAZ Productions |
| 35 |
.OBPACK - ObjectBar Theme Pack |
Stardock Corporation |
| 36 |
.OBR - Borland C++ Object Browser Data |
Micro Focus International plc |
| 37 |
.OBS - WAsP Obstacle List |
Wind Energy Division at Risø DTU, Denmark |
| 38 |
.OBT - Openbox Theme Format |
Openbox |
| 39 |
.OBV - 3D Photo Browser Thumbnail Cache |
Mootools software |
| 40 |
.OBW - Toontrack Superior Drummer Audio Format |
Toontrack |
| 41 |
.OBX - Rational XDE |
IBM |
| 42 |
.OBYX - Obyx Control |
Obyx |
| 43 |
.OBZ - Compressed 3D Object Format |
Smith Micro |
| 44 |
.OC3 - OpenCanvas 3 Event Format |
Portalgraphics |
| 45 |
.OC4 - OpenCanvas 4 Event Format |
Portalgraphics |
| 46 |
.OC5 - OpenCanvas 5 Event Format |
Portalgraphics |
| 47 |
.OC9 - OrgCon Organization |
EcoMerc |
| 48 |
.OCA - Custom Control Library Type Format |
Microsoft |
| 49 |
.OCAMLMAKEFILE - Caml Programming Language Makefile |
N/A |
| 50 |
.OCB - Origin Precompiled Origin C |
OriginLab Corporation |
| 51 |
.OCC - Oceanic DataPool Format |
Oceanic Consulting Corporation |
| 52 |
.OCD - OCAD Digitized Map Format |
OCAD |
| 53 |
.OCDC - Mathematica Document |
Wolfram Research, Inc. |
| 54 |
.OCDF - OneClickDigital Mp3 Audio Book |
Recorded Books LLC |
| 55 |
.OCE - Open Catalog Extension Connection Format |
Oracle |
| 56 |
.OCEN - EdGCM Data |
N/A |
| 57 |
.OCF - OM2 Cipher |
OM2 Technology Inc. |
| 58 |
.OCG - Osprey Custom Graph |
Mount Sinai Hospital |
| 59 |
.OCI - OpenCanvas Image Format |
Portalgraphics |
| 60 |
.OCM - Netscape Communicator Aim |
AOL Inc. |
| 61 |
.OCP - Advanced Art Studio Image |
N/A |
| 62 |
.OCR - FaxGrapper FAX Transcribed Text Format |
Nuance Communications |
| 63 |
.OCT - RADIANCE Octree Format |
Radiance |
| 64 |
.OCTEST - Xcode Objective-C Unit Test Bundle |
Apple |
| 65 |
.OCV - OCV Training Data |
N/A |
| 66 |
.OCX - ActiveX Control Format |
Microsoft |
| 67 |
.OC_ - Compressed ActiveX Control |
N/A |
| 68 |
.OD - Mascotte Mascopt Request Format |
INRIA/UNSA |
| 69 |
.OD1 - Omnis 5 Database |
TigerLogic Corp. (Omnis Technology Corporation) |
| 70 |
.OD2 - Omnis 5 Database |
TigerLogic Corp. (Omnis Technology Corporation) |
| 71 |
.OD3 - Omnis Studio Database |
TigerLogic Corp. (Omnis Technology Corporation) |
| 72 |
.OD4-9 - Omnis5 Database |
N/A |
| 73 |
.ODB - ArcView Object Database ASCII Format |
OASIS |
| 74 |
.ODC - OpenOffice.org OpenDocument Format |
Microsoft |
| 75 |
.ODCCUBEFILE - OpenDocument 1 |
N/A |
| 76 |
.ODCNEWFILE - Microsoft Office Data Connection |
Microsoft Corporation |
| 77 |
.ODCTABLEFILE - Microsoft Office |
Microsoft Corporation |
| 78 |
.ODE - Microsoft Office |
Microsoft Corporation |
| 79 |
.ODEX - Google Android Optimized Executalbe |
Google Inc. |
| 80 |
.ODF - Open Document Interchange Format (ODIF) |
Oracle |
| 81 |
.ODG - OpenDocument Drawing Format |
OASIS |
| 82 |
.ODH - Microsoft Visual Studio Interface Definition Language |
Microsoft Corporation |
| 83 |
.ODI - OpenOffice.org Image Format |
OASIS |
| 84 |
.ODIF - Open Document Interchange Format |
ITU-T |
| 85 |
.ODL - Object Description Language Format |
Microsoft |
| 86 |
.ODM - OpenOffice.org OpenDocument Global Text Document Format |
OverDrive |
| 87 |
.ODO - ICUBE Online Operating System Write Document Format |
iCUBE Network Solutions |
| 88 |
.ODP - OpenOffice.org OpenDocument Presentation Format |
Oracle |
| 89 |
.ODS - OpenDocument Spreadsheet Format |
Oracle |
| 90 |
.ODT - ODF Text Document Format |
Oracle |
| 91 |
.ODT# - OpenOffice.org Locked Document |
OpenOffice.org Project Team |
| 92 |
.ODTPC - Oracle User Productivity Kit Presentation |
Oracle Corporation |
| 93 |
.ODTTF - Microsoft Office Document Embedded Font |
Microsoft Corporation |
| 94 |
.ODV - Ocean Data View Data |
N/A |
| 95 |
.ODVI - LaTeX |
N/A |
| 96 |
.ODX - Microsoft BizTalk Server Diagram Format |
Microsoft |
| 97 |
.OD_ - Oracle Compressed Driver |
Oracle Corporation |
| 98 |
.OEACCAOUNT - Windows Mail |
Microsoft Corporation |
| 99 |
.OEACCOUNT - Windows Mail Account Settings Format |
Microsoft |
| 100 |
.OEB - Open EBook Format |
QSX |
| 101 |
.OECL - Open EDA Component Library |
N/A |
| 102 |
.OEF - Optim Export |
IBM |
| 103 |
.OEM - OEM Install Data Format |
Microsoft |
| 104 |
.OEMIGACCOUNT - Outlook Express Temporary |
Microsoft Corporation |
| 105 |
.OET - ESignal Order Entry Ticket |
eSignal |
| 106 |
.OEX - Opera Add-on Format |
Opera Software |
| 107 |
.OFA - Kodak OfotoNow |
Eastman Kodak Company |
| 108 |
.OFB - Oxygen Forensic Suite Backup |
Oxygen Software Company |
| 109 |
.OFC - Open Financial Connectivity Format |
Microsoft |
| 110 |
.OFD - ObjectView Form Definition |
Cypresslogic Systems Inc. |
| 111 |
.OFF - DEC 3D Object File Format |
N/A |
| 112 |
.OFFICEUI - Microsoft Office UI Customization |
Microsoft Corporation |
| 113 |
.OFFSETS - Offset |
N/A |
| 114 |
.OFL - OtsTurntables Playlist |
Ots Labs |
| 115 |
.OFM - Adobe PostScript Font Description Format |
Melco |
| 116 |
.OFN - MS Office File New (Other Office Documents) |
Microsoft Corporation |
| 117 |
.OFP - Objecteering Project |
Objecteering Software |
| 118 |
.OFR - OptimFROG Encoded Audio |
OptimFROG |
| 119 |
.OFS - OptimFROG Dualstream |
N/A |
| 120 |
.OFT - Microsoft Outlook Template Format |
Microsoft |
| 121 |
.OFX - Open Financial Exchange Format |
N/A |
| 122 |
.OGA - Ogg Vorbis Audio Profile Format |
Xiph.Org |
| 123 |
.OGD - Oracle Forms Graph |
Oracle Corporation |
| 124 |
.OGF - S.T.A.L.K.E.R. Model Format |
GSC Game World |
| 125 |
.OGG - Ogg Vorbis Audio Format |
Xiph.Org |
| 126 |
.OGL - ATI Overlay Source Code |
N/A |
| 127 |
.OGM - Ogg Vorbis Media Format |
N/A |
| 128 |
.OGNC - Dynamic Web Page Format |
N/A |
| 129 |
.OGO - Origin Graphic Object |
N/A |
| 130 |
.OGR - OGR C++ Open Source Library |
N/A |
| 131 |
.OGS - Origin Script Format |
Origons |
| 132 |
.OGV - Ogg Vorbis Video Format |
Xiph.Org |
| 133 |
.OGW - OriginLab Worksheet |
OriginLab Corporation |
| 134 |
.OGX - Ogg Vorbis Multiplex Profile |
Xiph.Org |
| 135 |
.OGZ - Cube 2 Sauerbraten Map Format |
Wouter van Oortmerssen |
| 136 |
.OH - DrillAssistant List |
N/A |
| 137 |
.OH4 - Overhoor List |
Efka-Soft |
| 138 |
.OHP - MS-DOS 7 |
Microsoft Corporation |
| 139 |
.OHS - Bink Outbound History |
RAD Game Tools, Inc. |
| 140 |
.OHW - Overhoor DrillAssistant List |
N/A |
| 141 |
.OIF - QuickBase Web-sharable Database Interchange |
Intuit Inc. |
| 142 |
.OIL - Open Image Library Format Image Format |
N/A |
| 143 |
.OJP - 3WayPack |
N/A |
| 144 |
.OK - Qedit |
Robelle |
| 145 |
.OKM - OkMap Map Defining |
Gian Paolo Saliola |
| 146 |
.OKOZO - Okozo Desktop Animation |
Okozo |
| 147 |
.OKR - PowerRecover One Key Recovery |
CyberLink Corp. |
| 148 |
.OKS - OKScript |
Mike Mardesich |
| 149 |
.OKT - Oktalyzer Music Module (MOD) Format |
N/A |
| 150 |
.OKX - OKScript |
Mike Mardesich |
| 151 |
.OL - Valve Hammer Object Layout |
Valve Corporation |
| 152 |
.OLA - Online Access Format |
N/A |
| 153 |
.OLB - Microsoft Office OLE Object Library Format |
Microsoft |
| 154 |
.OLB2 - CanOpener Library |
Abbot Systems |
| 155 |
.OLD - Backup Plus Backup Format |
N/A |
| 156 |
.OLE - Microsoft Object Linking And Embedding |
Microsoft Corporation |
| 157 |
.OLE2 - Microsoft Office Binary Document Container Format |
Microsoft Corporation |
| 158 |
.OLF - OyezForms Legal Documents |
Oyez Legal Software |
| 159 |
.OLK - Microsoft Outlook Address Book Format |
Microsoft |
| 160 |
.OLK14CATEGORY - Microsoft Outlook 2011 For Mac Category Format |
Microsoft |
| 161 |
.OLK14CONTACT - Microsoft Outlook 2011 For Mac Contact Format |
Microsoft |
| 162 |
.OLK14DBHEADER - Microsoft Outlook 2011 For Mac Database |
Microsoft Corporation |
| 163 |
.OLK14EVENT - Outlook Calendar Event Format |
Microsoft |
| 164 |
.OLK14FOLDER - Microsoft Outlook 2011 For Mac Folder |
Microsoft Corporation |
| 165 |
.OLK14GROUP - Outlook Group Format |
Microsoft |
| 166 |
.OLK14MAILACCOUNT - Microsoft Outlook 2011 For Mac Mail Account Settings Format |
Microsoft |
| 167 |
.OLK14MESSAGE - Microsoft Outlook 2011 For Mac Message Format |
Microsoft |
| 168 |
.OLK14MSGATTACH - Microsoft Outlook 2011 For Mac Message Attachment |
Microsoft Corporation |
| 169 |
.OLK14MSGSOURCE - Microsoft Outlook 2011 For Mac Message Source Format |
Microsoft |
| 170 |
.OLK14NOTE - Outlook Note Format |
Microsoft |
| 171 |
.OLK14PREF - Microsoft Outlook 2011 For Mac Preferences Format |
Microsoft |
| 172 |
.OLK14RECENT - Microsoft Outlook 2011 For Mac Recent Address |
Microsoft Corporation |
| 173 |
.OLK14RULE - Microsoft Outlook 2011 For Mac Rule |
Microsoft Corporation |
| 174 |
.OLK14SCHEDULE - Microsoft Outlook 2011 For Mac Schedule |
Microsoft Corporation |
| 175 |
.OLK14SEARCH - Microsoft Outlook 2011 For Mac Saved Search |
Microsoft Corporation |
| 176 |
.OLK14SIGNATURE - Microsoft Outlook 2011 For Mac Signature Format |
Microsoft |
| 177 |
.OLK14TASK - Outlook Task Format |
Microsoft |
| 178 |
.OLK14UID - Microsoft Outlook 2011 For Mac UID |
Microsoft Corporation |
| 179 |
.OLL - TrialDirector Load |
inData Corporation |
| 180 |
.OLM - Microsoft Outlook For Mac Data Format |
Microsoft |
| 181 |
.OLN - Microsoft Visual C++ Outline Examples |
Microsoft Corporation |
| 182 |
.OLPROJ - Adobe OnLocation |
Adobe Systems Incorporated |
| 183 |
.OLS - Microsoft Office List Shortcut |
Microsoft Corporation |
| 184 |
.OLT - Orbit Downloader Download List Format |
Orbit Downloader |
| 185 |
.OLV - Roller Coaster Tycoon |
Chris Sawyer |
| 186 |
.OLY - AFP Advanced Function Presentation Overlay Resource |
IBM |
| 187 |
.OMA - Sony OpenMG Music Format |
Sony |
| 188 |
.OMC - Origin Customized Menu |
OriginLab Corporation |
| 189 |
.OMCS - Office Manager Access Format |
Krekeler |
| 190 |
.OMD - MapInfo Routing J Server Data |
Pitney Bowes Software Inc. (MapInfo) |
| 191 |
.OMEG - Mathematica For Mac |
Wolfram Research, Inc. |
| 192 |
.OMF - Open Media Framework Format |
Avid Technology |
| 193 |
.OMFI - Open Media Framework |
N/A |
| 194 |
.OMG - O&O DiskImage Backup Format |
O&O Software GmBH |
| 195 |
.OML - TracePro Model |
Lambda Research Corporation |
| 196 |
.OMN - Omnipotent Collection |
N/A |
| 197 |
.OMO - OMake Object Format |
OMake |
| 198 |
.OMOD - Oblivion Mod Manager Mod Format |
N/A |
| 199 |
.OMP - Office Manager Pro Document Archive |
Krekeler |
| 200 |
.OMR - OMR Template |
Abhinav Parihar |
| 201 |
.OMS - Order Maven |
Briggs Softworks |
| 202 |
.OMT - SITH HLA Object Model Template |
Open Channel Software |
| 203 |
.OMX - OtsAV Media Library Information Format |
Ots Labs |
| 204 |
.ON2 - On2 Encoded FLV |
N/A |
| 205 |
.OND - Lotus Notes Format |
IBM |
| 206 |
.ONE - Microsoft OneNote Document Format |
Microsoft |
| 207 |
.ONECACHE - Microsoft OneNote Cache |
Microsoft Corporation |
| 208 |
.ONEPKG - Microsoft OneNote Package Format |
Microsoft |
| 209 |
.ONETMP - Microsoft OneNote Temporary |
Microsoft Corporation |
| 210 |
.ONETOC - Microsoft OneNote Table Of Contents |
Microsoft Corporation |
| 211 |
.ONETOC2 - Microsoft OneNote Table Of Contents Format |
Microsoft |
| 212 |
.ONM - Outdoor Navigator Map |
Maptech, Inc. |
| 213 |
.ONT - TheWord Module Format |
theWord Bible Software |
| 214 |
.ONTX - TheWord Encrypted Module Format |
theWord Bible Software |
| 215 |
.ONW - Omron HMI NTST |
Omron Corporation |
| 216 |
.ONX - OnyxGrass Image |
Onyx Computing, Inc. |
| 217 |
.OO3 - Omni Group Outliner 3 Format |
The Omni Group |
| 218 |
.OOG - PyGraph Python Graphics Interface Object Oriented Graphics |
Python Software Foundation |
| 219 |
.OOGL - Geomview Object Oriented Graphics Library |
Geometry Center at the University of Minnesota |
| 220 |
.OOK - Arachne Batch Script Format |
Arachne |
| 221 |
.OOS - OpenOffice.org Spreadsheet |
OpenOffice.org Project Team |
| 222 |
.OOT - OpenOffice.org Text |
OpenOffice.org Project Team |
| 223 |
.OP - ESignal OptionsPlus |
eSignal |
| 224 |
.OP2 - Outpost 2 Saved Game |
Dynamix, Inc. |
| 225 |
.OP4 - Nastran Output |
MSC Software Corporation |
| 226 |
.OPA - Fly! RAW Image Opacity Map |
Terminal Reality |
| 227 |
.OPAL - Microsoft Office Customization Tool (OCT) Language-specific Settings |
Microsoft Corporation |
| 228 |
.OPAX - Microsoft Office Customization Tool (OCT) Standard Settings |
Microsoft Corporation |
| 229 |
.OPB - Bryce Object |
DAZ 3D Inc. |
| 230 |
.OPC - Microsoft Office 97 Upgrade Control |
Microsoft Corporation |
| 231 |
.OPD - Durango Interferometry Software Document Format |
Diffraction International Ltd. |
| 232 |
.OPDOWNLOAD - Opera Next Incomplete Download |
Opera Software |
| 233 |
.OPEF - OmniPass Encrypted Folder |
Softex Incorporated |
| 234 |
.OPENBSD - OpenBSD Readme Format |
N/A |
| 235 |
.OPF - Open Packaging Format |
IDPF |
| 236 |
.OPG - Offline Plan Generation Package |
N/A |
| 237 |
.OPI - Adlib OCR Processing Information |
Adlib Software |
| 238 |
.OPJ - OrCAD Capture Project Format |
Cadence Design Systems |
| 239 |
.OPK - Sinking Island/LIle Noyée Game |
N/A |
| 240 |
.OPLC - Nokia Logo Format |
Nokia |
| 241 |
.OPLM - Outline Processor Markup Language |
N/A |
| 242 |
.OPML - OPML Outline Processor Markup Language File Format |
N/A |
| 243 |
.OPN - Court Opinion |
N/A |
| 244 |
.OPP - IPhotoDVD |
Kerensoft |
| 245 |
.OPPC - Space Marine Game Resource Package |
Relic Entertainment Inc. |
| 246 |
.OPQ - Eschalon: Book I Game |
Basilisk Games |
| 247 |
.OPR - OPRO X Browser |
OPRO Japan Co.,Ltd. |
| 248 |
.OPS - Microsoft Office Profile Settings Format |
Microsoft |
| 249 |
.OPT - MySQL Database Data Format |
N/A |
| 250 |
.OPTIONS - SE-SOFT Configuration Format |
SE-SOFT |
| 251 |
.OPTS - Linux Configuration Options Format |
N/A |
| 252 |
.OPUS - Opus Audio Format |
Xiph.Org |
| 253 |
.OPW - OrgPlus For Windows Organization Chart |
Insperity, Inc. |
| 254 |
.OPX - Microsoft Office Organization Chart File Format |
Insperity Business Services |
| 255 |
.OPXT - OrpPlus Template |
Insperity, Inc. |
| 256 |
.OPY - OptiY Model |
OptiY GmbH |
| 257 |
.OP_ - GKSetup Support |
GkWare e.K. |
| 258 |
.OQY - Microsoft Excel OLAP Query Format |
Microsoft |
| 259 |
.OR2 - Lotus Organizer 2 Format |
IBM |
| 260 |
.OR3 - IBM Lotus Organizer 97 Format |
IBM |
| 261 |
.OR4 - Lotus Organizer Data Format |
IBM |
| 262 |
.OR5 - IBM Lotus Organizer Format |
IBM |
| 263 |
.OR6 - Lotus Organizer Data Format |
IBM |
| 264 |
.OR8 - Rational Rose Oracle8 Database Model Report |
IBM |
| 265 |
.ORA - Oracle Database Parameter Configuration Format |
Oracle |
| 266 |
.ORB - Original EBook Reader Ebook |
N/A |
| 267 |
.ORC - CSound Orchestra Midi Format |
N/A |
| 268 |
.ORDEREDTEST - Microsoft Visual Studio Ordered Test Format |
Microsoft |
| 269 |
.ORE - Ore Executable Format |
crait |
| 270 |
.ORF - Olympus Digital Camera Raw Image Format |
Olympus |
| 271 |
.ORG - Lotus Organiser Format |
N/A |
| 272 |
.ORG2+ - Lotus Organizer |
IBM |
| 273 |
.ORI - Original Format |
N/A |
| 274 |
.ORIG - Original Format |
N/A |
| 275 |
.ORIGINAL - Netobjects Fusion Components Bbscomp Message |
NetObjects Inc. |
| 276 |
.ORIGINAL_EPUB - EPUB Ebook Backup |
N/A |
| 277 |
.ORIGINAL_MOBI - MOBI Ebook Backup |
N/A |
| 278 |
.ORK - Warhammer Mark Of Chaos Game Archive |
Games Workshop Group PLC |
| 279 |
.ORL - Object-Relational Language |
N/A |
| 280 |
.ORMDESIGNER - ORM Designer Project |
Inventic s.r.o. |
| 281 |
.ORS - DSP Group TrueSpeech Audio Format |
N/A |
| 282 |
.ORT - COREX Orthographic Transcriptions Format |
N/A |
| 283 |
.ORV - Oracom Video Format |
Oracom |
| 284 |
.ORX - RadiantOne Virtual Directory Server Database Schema |
Radiant Logic |
| 285 |
.ORZ - Holic Game |
Netgame |
| 286 |
.OS - ObjectScript Source Format |
ObjectScript |
| 287 |
.OS2 - Os2 System |
IBM |
| 288 |
.OS3 - OS/2 Warp 3 |
IBM |
| 289 |
.OSA - W32/Sober-AD |
N/A |
| 290 |
.OSAS - Apple Script Library Tani Script |
N/A |
| 291 |
.OSAX - FindFile OSAX Mac Format Type |
Apple |
| 292 |
.OSB - OpenStreetMap Binary Map Format |
Merkaartor |
| 293 |
.OSBX - OneSafe Exported Backup |
Lunabee Pte Ltd |
| 294 |
.OSC - Remote Installation Services Client Installation Wizard Format |
Microsoft Corporation |
| 295 |
.OSCD - TouchOSC Interface Editor Template |
hexler |
| 296 |
.OSD - Open Software Description |
Microsoft Corporation |
| 297 |
.OSDX - Microsoft Windows Search Connector Format |
Microsoft |
| 298 |
.OSF - Descent 3 Sound |
Interplay Entertainment Corporation |
| 299 |
.OSG - OSGJS JSON Input |
osg.js |
| 300 |
.OSK - Osu! Skin Format |
peppy |
| 301 |
.OSL - OckamSoft Log |
Ockam Instruments, Inc. |
| 302 |
.OSM - OpenStreetMap Data Format |
OpenStreetMap |
| 303 |
.OSP - OpenShot Project Format |
Jonathan Thomas |
| 304 |
.OSR - Osu! Game Replay Format |
peppy |
| 305 |
.OSS - Microsoft Office Saved Search Format |
Microsoft |
| 306 |
.OST - Microsoft Outlook Inbox Off-line Folder Format |
Microsoft |
| 307 |
.OSU - Osu! Dialog Format |
peppy |
| 308 |
.OSW - ONESWING Contents |
Keisokugiken corporation |
| 309 |
.OSX - Apple Mac OS PowerPC Executable Format |
N/A |
| 310 |
.OSZ - Osu! Beatmap Format |
peppy |
| 311 |
.OT - TheWord Text Module Format |
theWord Bible Software |
| 312 |
.OTA - OTA Bitmap Format |
Nokia |
| 313 |
.OTB - Nokia OTA Bitmap Format |
Nokia |
| 314 |
.OTC - OpenDocument Chart Template Format |
OASIS |
| 315 |
.OTD - OpenIV Texture Data |
N/A |
| 316 |
.OTF - OpenType Font File Format |
N/A |
| 317 |
.OTG - OpenOffice.org Graphics Document Template |
OASIS |
| 318 |
.OTH - OpenOffice.org OpenDocument HTML Text Template |
OASIS |
| 319 |
.OTI - OpenDocument Image Template Format |
OASIS |
| 320 |
.OTL - Super NoteTab Template Format |
Fookes Software |
| 321 |
.OTLN - Opal Outline Format |
A Sharp |
| 322 |
.OTM - Microsoft Outlook Macro Format |
Microsoft |
| 323 |
.OTP - OpenOffice.org Presentation Template Format |
OASIS |
| 324 |
.OTR - IRIX Complied FTR |
Silicon Graphics, Inc. |
| 325 |
.OTRKEY - OTRKEY Encoded Video Format |
OnlineTvRecorder.com |
| 326 |
.OTS - OpenOffice.org OpenDocument Spreadsheet Template Format |
OASIS |
| 327 |
.OTT - OpenOffice.org Text Document Template Format |
OASIS |
| 328 |
.OTV - Rotor-Disc OTV Kit OTV Calibration |
QIAGEN |
| 329 |
.OTX - TheWord Encrypted Module Format |
theWord Bible Software |
| 330 |
.OTZ - OpenLP Theme Format |
OpenLP |
| 331 |
.OUT - Output Format |
N/A |
| 332 |
.OUTLINE - FontTwister Letter Outline |
Neuber Software |
| 333 |
.OUTLOOK97 - Microsoft Outlook Custom Mail |
Microsoft Corporation |
| 334 |
.OUX - Bibexcel |
Olle Persson |
| 335 |
.OV - OpenInsight Database Overflow |
Revelation Software |
| 336 |
.OV1 - Overlay |
Microsoft Corporation |
| 337 |
.OV2 - TomTom Navigator Point Of Interest Format |
TomTom |
| 338 |
.OV3 - Overlay |
Microsoft Corporation |
| 339 |
.OV4 - Overlay |
Microsoft Corporation |
| 340 |
.OV5 - Overlay |
Microsoft Corporation |
| 341 |
.OVA - Open Virtual Machine Format |
VMware |
| 342 |
.OVD - ObjectVision Data |
Borland Software Corporation |
| 343 |
.OVE - Overture Music Score Format |
GenieSoft |
| 344 |
.OVF - Open Virtualization Format Package |
VMware |
| 345 |
.OVG - ObjectVision Converted Graphic |
Borland Software Corporation |
| 346 |
.OVH - OMSI Bus Settings |
Marcel Kuhnt und Rüdiger Hülsmann |
| 347 |
.OVL - Overlay Format |
Atari |
| 348 |
.OVOLOG - OoVoo Log |
ooVoo LLC |
| 349 |
.OVP - The Overlay Maker Package Format |
The Overlay Maker |
| 350 |
.OVPN - OpenVPN Config Format |
OpenVPN Technologies |
| 351 |
.OVR - Overlay Format |
The Overlay Maker |
| 352 |
.OVS - Ovation 1 Style Sheet |
David Pilling |
| 353 |
.OVW - Logic Pro Overview Format |
Apple |
| 354 |
.OW - Free Pascal For Windows Object Format |
Free Pascal |
| 355 |
.OWC - OutWit Hub OutWit Catch Db Format |
OutWit Technologies |
| 356 |
.OWG - OutWit Hub OutWit Gear Outwit Thesaurus Db Format |
OutWit Technologies |
| 357 |
.OWL - OWL (Obfuscated Weird Language) Source Code Format |
N/A |
| 358 |
.OWM - OutWit Hub OutWit Mashup XML Format |
OutWit Technologies |
| 359 |
.OWR - PeopleSoft Results Archive |
Oracle Corporation |
| 360 |
.OWS - Web Studio Project |
Beach Software, LLC |
| 361 |
.OWT - Ancestry.com OneWorldTree |
Ancestry.com Inc. |
| 362 |
.OX - Ox Object-Oriented Matrix Programming Language |
Jurgen A Doornik |
| 363 |
.OXD - PS3 Proxy Server |
N/A |
| 364 |
.OXF - IBM Rational Rhapsody |
N/A |
| 365 |
.OXO - Ox Object-Oriented Matrix Programming Language |
Jurgen A Doornik |
| 366 |
.OXPS - Windows 8 OpenXPS Document Format |
Microsoft |
| 367 |
.OXT - OpenOffice.org Extension Help Format |
Sun Microsystems |
| 368 |
.OXYGENE - Oxygene Project Format |
RemObjects |
| 369 |
.OYX - IBM Lotus Approach Alternate Database Index Format |
N/A |
| 370 |
.OYZ - Lotus Approach Alternate DBASE Index |
dataBased Intelligence, Inc. |
| 371 |
.OZ - Opera Job Management Compressed Format |
Opera Company |
| 372 |
.OZF2 - OziExplorer Map |
Des & Lorraine Newman |
| 373 |
.OZFX3 - OziExplorer Image |
Des & Lorraine Newman |
| 374 |
.OZJ - Mu Online Graphic |
Webzen |
| 375 |
.OZP - Orgadata LogiKal |
Orgadata AG |
| 376 |
.OZT - Mu Online Texture |
Webzen |
