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Sorted alphabetically: O

#File extensionThe full name of the file
 
1 O File Extension Compiled Object Format
2 O01 File Extension Typhoon Voice
3 O2C File Extension Objects To See 3D
4 O8D File Extension OCTGN Deck
5 O8G File Extension OCTGN Game Definition
6 O8O File Extension Mediator 5 Repository Tabs Vorlagen.006
7 O8S File Extension OCTGN Set
8 OAB File Extension Offline Address Book
9 OAD File Extension Suite Notaro Document
10 OAF File Extension Microsoft Flight Simulator Texture
11 OAM File Extension Adobe Edge Animate Widget Format
12 OAP File Extension Samsung Bada Signed Installation Package
13 OAR File Extension OpenSimulator Archive
14 OAS File Extension Microsoft Outlook Attachment Sniffer
15 OAT File Extension Google Android RunTime Code
16 OAV File Extension Microsoft Flight Simulator Texture
17 OAW File Extension OpenArchitectureWare Workflow
18 OAZ File Extension NetFax Manager OAZ Fax Image
19 OB File Extension IBM LinkWay Object
20 OB! File Extension Orbit Downloader Incomplete Download
21 OB3 File Extension ABF Software Outlook Backup Backup
22 OB5 File Extension TopLang OE Backup
23 OBAK File Extension WinSQL Offline Backup
24 OBB File Extension Android Opaque Binary Blob Format
25 OBD File Extension Office Binder Document
26 OBF File Extension OsmAnd Offline GPS Vector Maps
27 OBG File Extension ZBrush Mesh
28 OBI File Extension Outlook RSS Subscription Format
29 OBJ File Extension Wavefront 3D Object Format
30 OBJX File Extension Metatools Object Bryce Support
31 OBK File Extension OrCAD Capture Design Or Library
32 OBL File Extension TrueSpace
33 OBML File Extension Opera Mini Saved Web Page
34 OBML15 File Extension Opera Mini 5.1 Saved Web Page
35 OBP File Extension Bryce Object Format
36 OBPACK File Extension ObjectBar Theme Pack
37 OBR File Extension Borland C++ Object Browser Data
38 OBS File Extension WAsP Obstacle List
39 OBT File Extension Openbox Theme Format
40 OBV File Extension 3D Photo Browser Thumbnail Cache
41 OBW File Extension Superior Drummer Sounds Format
42 OBX File Extension Rational XDE
43 OBYX File Extension Obyx Control
44 OBZ File Extension Compressed 3D Object Format
45 OC3 File Extension OpenCanvas 3 Event Format
46 OC4 File Extension OpenCanvas 4 Event Format
47 OC5 File Extension OpenCanvas 5 Event Format
48 OC9 File Extension OrgCon Organization
49 OCA File Extension Custom Control Library Type Format
50 OCAMLMAKEFILE File Extension Caml Programming Language Makefile
51 OCB File Extension Origin Precompiled Origin C
52 OCC File Extension Oceanic DataPool Format
53 OCD File Extension OCAD Map Format
54 OCDC File Extension Mathematica Document
55 OCDF File Extension OneClickDigital Mp3 Audio Book
56 OCE File Extension Open Catalog Extension Connection Format
57 OCEN File Extension EdGCM Data
58 OCF File Extension OM2 Cipher
59 OCG File Extension Osprey Custom Graph
60 OCI File Extension OpenCanvas Image
61 OCM File Extension Netscape Communicator Aim
62 OCP File Extension Advanced Art Studio Image
63 OCR File Extension FAXGrapper Fax Text Format
64 OCT File Extension Radiance Octree Format
65 OCTEST File Extension Xcode Objective-C Unit Test Bundle
66 OCV File Extension OCV Training Data
67 OCX File Extension ActiveX Control
68 OC_ File Extension Compressed ActiveX Control
69 OD File Extension Mascopt Graph Request Format
70 OD1 File Extension Omnis 5 Database
71 OD2 File Extension Omnis 5 Database
72 OD3 File Extension Omnis Studio Database
73 OD4-9 File Extension Omnis5 Database
74 OD5 File Extension Omnis 5 Database Format
75 ODB File Extension OpenDocument Database
76 ODC File Extension Office Data Connection Format
77 ODCCUBEFILE File Extension OpenDocument 1
78 ODCDATABASEFILE File Extension Microsoft Office Data Format
79 ODCNEWFILE File Extension Microsoft Office Data Connection
80 ODCTABLEFILE File Extension Microsoft Office
81 ODE File Extension Microsoft Office
82 ODEX File Extension Google Android Optimized Executalbe
83 ODF File Extension OpenDocument Formula
84 ODG File Extension OpenDocument Graphic Format
85 ODH File Extension Microsoft Visual Studio Interface Definition Language
86 ODI File Extension OpenDocument Image
87 ODIF File Extension Open Document Interchange Format
88 ODL File Extension Object Description Language Format
89 ODM File Extension OverDrive Media Format
90 ODO File Extension Online Operating System Write Document
91 ODP File Extension OpenDocument Presentation
92 ODR File Extension HMI Builder Report Format
93 ODS File Extension OpenDocument Spreadsheet
94 ODT File Extension OpenDocument Text Document
95 ODT# File Extension OpenOffice.org Locked Document
96 ODTPC File Extension Oracle User Productivity Kit Presentation
97 ODTTF File Extension Microsoft Office Document Embedded Font
98 ODV File Extension Ocean Data View Data
99 ODVI File Extension LaTeX
100 ODX File Extension BizTalk Server Orchestration Format
101 OD_ File Extension Oracle Compressed Driver
102 OEACCAOUNT File Extension Windows Mail
103 OEACCOUNT File Extension Windows Mail Account Format
104 OEB File Extension Outlook Express Backup Wizard Format
105 OECL File Extension Open EDA Component Library
106 OEF File Extension Optim Export
107 OEM File Extension OEM Setup Format
108 OEMIGACCOUNT File Extension Outlook Express Temporary
109 OET File Extension ESignal Order Entry Ticket
110 OEX File Extension Opera Extension
111 OFA File Extension Kodak OfotoNow
112 OFB File Extension Oxygen Forensic Suite Backup
113 OFC File Extension Open Financial Connectivity Format
114 OFD File Extension ObjectView Form Definition
115 OFF File Extension Object Format Format
116 OFFICEUI File Extension Microsoft Office UI Customization
117 OFFSETS File Extension Offset
118 OFL File Extension Ots Format List
119 OFM File Extension Melco Embroidery Format
120 OFN File Extension MS Office Format New (Other Office Documents)
121 OFP File Extension Objecteering Project
122 OFR File Extension OptimFROG Audio Format
123 OFS File Extension OptimFROG Dualstream
124 OFT File Extension Outlook Format Template
125 OFX File Extension Open Financial Exchange Format
126 OGA File Extension Ogg Vorbis Audio Format
127 OGD File Extension Oracle Forms Graph
128 OGF File Extension S.T.A.L.K.E.R. Model Format
129 OGG File Extension Ogg Vorbis Audio Format
130 OGL File Extension ATI Overlay Source Code
131 OGM File Extension Ogg Media Format
132 OGNC File Extension Dynamic Web Page
133 OGO File Extension Origin Graphic Object
134 OGR File Extension OGR C++ Open Source Library
135 OGS File Extension Origons Movie Data Format
136 OGV File Extension Ogg Video Format
137 OGW File Extension OriginLab Worksheet
138 OGX File Extension Ogg Vorbis Multiplexed Media Format
139 OGZ File Extension Cube 2 Map Format
140 OH File Extension DrillAssistant List
141 OH4 File Extension Overhoor List
142 OHP File Extension MS-DOS 7
143 OHS File Extension Bink Outbound History
144 OHW File Extension Overhoor DrillAssistant List
145 OIF File Extension QuickBase Web-sharable Database Interchange
146 OIL File Extension Open Image Library Format Image Format
147 OJP File Extension 3WayPack
148 OK File Extension Qedit
149 OKM File Extension OkMap Map Defining
150 OKOZO File Extension Okozo Desktop Animation
151 OKR File Extension PowerRecover One Key Recovery
152 OKS File Extension OKScript
153 OKT File Extension Oktalyzer Module
154 OKX File Extension OKScript
155 OL File Extension Valve Hammer Object Layout
156 OLA File Extension Online Access Format
157 OLB File Extension OLE Object Library
158 OLB2 File Extension CanOpener Library
159 OLD File Extension Backup Format
160 OLE File Extension Microsoft Object Linking And Embedding
161 OLE2 File Extension Microsoft Office Binary Document Container Format
162 OLF File Extension OyezForms Legal Documents
163 OLK File Extension Outlook Address Book Format
164 OLK14CATEGORY File Extension Outlook Category Format
165 OLK14CONTACT File Extension Outlook Contact Format
166 OLK14DBHEADER File Extension Microsoft Outlook 2011 For Mac Database
167 OLK14EVENT File Extension Outlook Calendar Event Format
168 OLK14EXACCOUNT File Extension Microsoft Outlook 2011 For Mac Data Format
169 OLK14FOLDER File Extension Microsoft Outlook 2011 For Mac Folder
170 OLK14GROUP File Extension Outlook Group Format
171 OLK14MAILACCOUNT File Extension Outlook Mail Account Format
172 OLK14MESSAGE File Extension Outlook Message Format
173 OLK14MSGATTACH File Extension Microsoft Outlook 2011 For Mac Message Attachment
174 OLK14MSGSOURCE File Extension Outlook Email Message Data Format
175 OLK14NOTE File Extension Outlook Note Format
176 OLK14PREF File Extension Outlook Preferences Format
177 OLK14RECENT File Extension Microsoft Outlook 2011 For Mac Recent Address
178 OLK14RULE File Extension Microsoft Outlook 2011 For Mac Rule
179 OLK14SCHEDULE File Extension Microsoft Outlook 2011 For Mac Schedule
180 OLK14SEARCH File Extension Microsoft Outlook 2011 For Mac Saved Search
181 OLK14SIGNATURE File Extension Outlook Signature Format
182 OLK14TASK File Extension Outlook Task Format
183 OLK14UID File Extension Microsoft Outlook 2011 For Mac UID
184 OLL File Extension TrialDirector Load
185 OLM File Extension Mac Outlook Database Format
186 OLN File Extension Microsoft Visual C++ Outline Examples
187 OLPROJ File Extension Adobe OnLocation
188 OLR File Extension Openlab RAW Image Format
189 OLS File Extension Microsoft Office List Shortcut
190 OLT File Extension Orbit Downloads List
191 OLV File Extension Roller Coaster Tycoon
192 OLY File Extension AFP Advanced Function Presentation Overlay Resource
193 OMA File Extension Sony OpenMG Music Format
194 OMC File Extension Origin Customized Menu
195 OMCS File Extension Office Manager Access Format
196 OMD File Extension MapInfo Routing J Server Data
197 OMEG File Extension Mathematica For Mac
198 OMF File Extension Open Media Framework Format
199 OMFI File Extension Open Media Framework
200 OMG File Extension O&O DiskImage Backup Format
201 OML File Extension TracePro Model
202 OMN File Extension Omnipotent Collection
203 OMO File Extension OMake Object Format
204 OMOD File Extension Oblivion Mod Archive
205 OMP File Extension Office Manager Document Archive
206 OMR File Extension OMR Template
207 OMS File Extension Order Maven
208 OMT File Extension SITH HLA Object Model Template
209 OMU File Extension XWE Data Format
210 OMX File Extension OtsAV Media Library Information Format
211 ON2 File Extension On2 Encoded FLV
212 ONB File Extension OpenModelica Document Format
213 ONBATCH File Extension ON1 Photo Data Format
214 OND File Extension Lotus Notes Encapsulated Memo Format
215 ONE File Extension OneNote Document
216 ONECACHE File Extension Microsoft OneNote Cache
217 ONEFFECTS File Extension Perfect Effects Data Format
218 ONEPKG File Extension Microsoft OneNote Package Format
219 ONETMP File Extension Microsoft OneNote Temporary
220 ONETOC File Extension Microsoft OneNote Table Of Contents
221 ONETOC2 File Extension Microsoft OneNote Table Of Contents Format
222 ONM File Extension Outdoor Navigator Map
223 ONT File Extension TheWord Bible Text Module
224 ONTX File Extension TheWord Encrypted Bible Text Module
225 ONW File Extension Omron HMI NTST
226 ONX File Extension OnyxGrass Image
227 OO3 File Extension OmniOutliner 3 Format
228 OOG File Extension PyGraph Python Graphics Interface Object Oriented Graphics
229 OOGL File Extension Geomview Object Oriented Graphics Library
230 OOK File Extension Arachne Batch Script
231 OOPS File Extension Oops Format
232 OOS File Extension OpenOffice.org Spreadsheet
233 OOT File Extension OpenOffice.org Text
234 OP File Extension ESignal OptionsPlus
235 OP2 File Extension Outpost 2 Saved Game
236 OP4 File Extension Nastran Output
237 OPA File Extension Fly! RAW Image Opacity Map
238 OPAL File Extension Microsoft Office Customization Tool (OCT) Language-specific Settings
239 OPAX File Extension Microsoft Office Customization Tool (OCT) Standard Settings
240 OPB File Extension Bryce Object
241 OPC File Extension Microsoft Office 97 Upgrade Control
242 OPD File Extension Durango Interferometry Software Document Format
243 OPDOWNLOAD File Extension Opera Partially Downloaded Format
244 OPEF File Extension OmniPass Encrypted Folder
245 OPENBSD File Extension OpenBSD Readme Format
246 OPF File Extension Open Packaging Format Format
247 OPG File Extension Offline Plan Generation Package
248 OPI File Extension Adlib OCR Processing Information
249 OPJ File Extension OrCAD Project Format
250 OPK File Extension Sinking Island/LIle Noyée Game
251 OPLC File Extension Nokia Operator Logo Format
252 OPLM File Extension Outline Processor Markup Language
253 OPLX File Extension Omniplan Project Document Format
254 OPML File Extension Outline Processor Markup Language Format
255 OPN File Extension Court Opinion
256 OPP File Extension IPhotoDVD
257 OPPC File Extension Space Marine Game Resource Package
258 OPQ File Extension Eschalon: Book I Game
259 OPR File Extension OPRO X Browser
260 OPS File Extension Office Profile Settings Format
261 OPT File Extension MySQL Database Data Format
262 OPTIONS File Extension SE-SOFT Configuration Format
263 OPTS File Extension Linux Configuration Options Format
264 OPUS File Extension Opus Audio Format
265 OPW File Extension OrgPlus For Windows Organization Chart
266 OPX File Extension OrgPlus Org Chart
267 OPXT File Extension OrpPlus Template
268 OPY File Extension OptiY Model
269 OP_ File Extension GKSetup Support
270 OQY File Extension Excel OLAP Query Format
271 OR2 File Extension Lotus Organizer 2 Format
272 OR3 File Extension IBM Lotus Organizer 97 Format
273 OR4 File Extension IBM Lotus Organizer 97 GS Format
274 OR5 File Extension Lotus Organizer 5 Format
275 OR6 File Extension Lotus Organizer 6 Format
276 OR8 File Extension Rational Rose Oracle8 Database Model Report
277 ORA File Extension Oracle Database Configuration Format
278 ORB File Extension Original EBook Reader Ebook
279 ORC File Extension CSound Orchestra Midi Format
280 ORD File Extension OMAX Routed Data Format
281 ORDEREDTEST File Extension Visual Studio Ordered Test Format
282 ORE File Extension Ore Executable Format
283 ORF File Extension Olympus RAW Format
284 ORG File Extension Lotus Organizer Format
285 ORG2+ File Extension Lotus Organizer
286 ORI File Extension Original Format
287 ORIG File Extension Original Format
288 ORIGINAL File Extension Netobjects Fusion Components Bbscomp Message
289 ORIGINAL_EPUB File Extension EPUB Ebook Backup
290 ORIGINAL_MOBI File Extension MOBI Ebook Backup
291 ORK File Extension Warhammer Mark Of Chaos Game Archive
292 ORL File Extension Object-Relational Language
293 ORMDESIGNER File Extension ORM Designer Project
294 ORS File Extension DSP Group TrueSpeech Audio Format
295 ORT File Extension COREX Orthographic Transcriptions Format
296 ORV File Extension Oracom Video Format
297 ORX File Extension RadiantOne VDS Database Schema
298 ORZ File Extension Holic Game
299 OS File Extension ObjectScript Source Format
300 OS2 File Extension Os2 System
301 OS3 File Extension OS/2 Warp 3
302 OSA File Extension W32/Sober-AD
303 OSAS File Extension Apple Script Library Tani Script
304 OSAX File Extension FindFile OSAX Mac Format Type
305 OSB File Extension OpenStreetMap Binary Map Format
306 OSBX File Extension OneSafe Exported Backup
307 OSC File Extension Remote Installation Services Client Installation Wizard Format
308 OSCD File Extension TouchOSC Interface Editor Template
309 OSD File Extension Open Software Description
310 OSDX File Extension Search Connector Description Format
311 OSF File Extension Descent 3 Sound
312 OSG File Extension OSGJS JSON Input
313 OSK File Extension Osu! Skin Format
314 OSL File Extension OckamSoft Log
315 OSM File Extension OpenStreetMap Map Format
316 OSN File Extension Open Symbolic Notation Data Format
317 OSP File Extension OpenShot Project Format
318 OSR File Extension Osu! Replay Format
319 OSS File Extension Microsoft Outlook Saved Search Format
320 OST File Extension Outlook Offline Folder Format
321 OSU File Extension Osu! Script
322 OSW File Extension ONESWING Contents
323 OSX File Extension PowerPC Executable Format
324 OSZ File Extension Osu! Beatmap Format
325 OT File Extension TheWord Old Testament Text Module
326 OTA File Extension OTA Bitmap Image
327 OTB File Extension Nokia Over The Air Bitmap Image
328 OTC File Extension OpenDocument Chart Template
329 OTD File Extension OpenIV Texture Data
330 OTF File Extension OpenType Font
331 OTG File Extension OpenDocument Graphic Template
332 OTH File Extension OpenDocument HTML Template
333 OTI File Extension OpenDocument Image Template
334 OTL File Extension NoteTab Outline Format
335 OTLN File Extension Opal Outline Format
336 OTM File Extension Outlook Macro Format
337 OTP File Extension OpenDocument Presentation Template
338 OTR File Extension IRIX Complied FTR
339 OTRKEY File Extension OnlineTvRecorder Encoded Video Format
340 OTS File Extension OpenDocument Spreadsheet Template
341 OTT File Extension OpenDocument Document Template
342 OTV File Extension Rotor-Disc OTV Kit OTV Calibration
343 OTX File Extension TheWord Encrypted Old Testament Text Module
344 OTZ File Extension OpenLP Theme Format
345 OUT File Extension Output Format
346 OUT1 File Extension UltraEdit Data Format
347 OUTJOB File Extension Altium Designer Data Format
348 OUTLINE File Extension FontTwister Letter Outline
349 OUTLOOK97 File Extension Microsoft Outlook Custom Mail
350 OUV File Extension Sphinx Open Ended Responses Format
351 OUX File Extension Bibexcel
352 OV File Extension OpenInsight Database Overflow
353 OV1 File Extension Overlay
354 OV2 File Extension TomTom Points Of Interest Database
355 OV3 File Extension Overlay
356 OV4 File Extension Overlay
357 OV5 File Extension Overlay
358 OVA File Extension Open Virtual Appliance
359 OVD File Extension ObjectVision Data
360 OVE File Extension Overture Musical Score
361 OVF File Extension Open Virtualization Format
362 OVG File Extension ObjectVision Converted Graphic
363 OVH File Extension OMSI Bus Settings
364 OVK File Extension Little Busters! Game Data Format
365 OVL File Extension Rollercoaster Tycoon 3 Data Format
366 OVLX File Extension E-Sword Overlay Data Format
367 OVOLOG File Extension OoVoo Log
368 OVP File Extension The Overlay Maker Package Format
369 OVPN File Extension OpenVPN Configuration Format
370 OVR File Extension The Overlay Maker Overlay Format
371 OVS File Extension Ovation 1 Style Sheet
372 OVW File Extension Logic Pro Overview Format
373 OW File Extension Free Pascal 1.0.x Object Format
374 OWC File Extension OutWit Catch Database
375 OWG File Extension OutWit Gear Database
376 OWL File Extension OWL Source Code Format
377 OWM File Extension OutWit XML Mashup Format
378 OWR File Extension PeopleSoft Results Archive
379 OWS File Extension Web Studio Project
380 OWT File Extension Ancestry.com OneWorldTree
381 OX File Extension Ox Object-Oriented Matrix Programming Language
382 OXD File Extension PS3 Proxy Server
383 OXF File Extension IBM Rational Rhapsody
384 OXO File Extension Ox Object-Oriented Matrix Programming Language
385 OXPS File Extension OpenXPS Format
386 OXT File Extension Apache OpenOffice Extension
387 OXYGENE File Extension Oxygene Project Format
388 OYX File Extension Approach Alternate Database Index
389 OYZ File Extension Lotus Approach Alternate DBASE Index
390 OZ File Extension Opera Job Management Compressed Format
391 OZF2 File Extension OziExplorer Map
392 OZFX3 File Extension OziExplorer Image
393 OZJ File Extension Mu Online Graphic
394 OZP File Extension Orgadata LogiKal
395 OZT File Extension Mu Online Texture
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PLT

AutoCAD Plotter Document

Files with PLT extension are used by AutoCAD. PLT is a vector-based plotter file that can store geometrical shapes, images, mathematical calculati...

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