OpenFile.me

Browse file extensions
with the first letter of the file name suffix: o  page 4

Just click below the file extension you are looking for and you will find programs that can be used to open it.

List of file extension entries starting with the letter o (page 4)

  • .oogl Geomview Object Oriented Graphics Library
  • .ook Arachne batch script
  • .ool Orbit object list
  • .oom Shroom swap
  • .oop OOP Packer archive
  • .oops Oops file
  • .oos Apache OpenOffice (OpenOffice.org) spreadsheet
  • .oot Apache OpenOffice (OpneOffice.org) text document
  • .op eSignal OptionsPlus data
  • .op2 Outpost 2 saved game
  • .op4 Nastran output data
  • .opa Psion OPL object
  • .opal Microsoft Office Customization Tool settings
  • .opax Microsoft Office Customization Tool (OCT) standard settings
  • .opb Bryce object
  • .opc Microsoft Office 97 upgrade control data
  • .opcses Opticodec-PC data
  • .opd Durango Interferometry Software document
  • .opdownload Opera partially finished download
  • .opef OmniPass encrypted folder
  • .openbsd OpenBSD readme document
  • .opf Ebook in Open Packaging Format
  • .opg Offline Plan Generation package
  • .oph Clipboard data
  • .opi Adlib OCR processing information data
  • .opj OrCAD Capture file
  • .opk Sinking Island game data
  • .opl Open Programming Language source code
  • .oplc Nokia logo
  • .oplm Outline Processor Markup Language source code
  • .oplx Omniplan project document
  • .opml OPML Outline Processor Markup Language file format
  • .opn Rebel Strip Poker opponent data
  • .opo Psion OPL object
  • .opp iPhotoDVD file
  • .oppc Space Marine game resource package
  • .oppo oppo core data
  • .opq Eschalon: Book I game data
  • .opr OPRO X Browser data
  • .oprc Palm OS data
  • .ops Microsoft Office profile settings
  • .opsx Open Pedigree Standard Exchange Document
  • .opt MySQL database data
  • .options SE-SOFT configuration data
  • .opts Linux configuration options
  • .opus Opus audio content
  • .opuscert Directory Opus certificate
  • .opv OpenPanorama visit data
  • .opw OrgPlus for Windows organization chart
  • .opx Microsoft Office Organization chart file format
  • .opxs Mistyped oxps data
  • .opxt OrpPlus template
  • .opy OptiY model
  • .opz OPTech data
  • .op_ GKSetup support data
  • .oqy Microsoft Excel OLAP query data
  • .or2 Lotus Organizer 2 data
  • .or3 IBM Lotus Organizer 97 data
  • .or4 Lotus Organizer data
  • .or5 IBM Lotus Organizer data
  • .or6 Lotus Organizer data
  • .ora Oracle database parameter configuration data
  • .orb Original eBook Reader e-book
  • .orc CSound Orchestra midi audio
  • .ord OMAX routed data
  • .orderedtest Microsoft Visual Studio ordered test
  • .ore Narbacular Drop game content data
  • .orf Olympus Digital camera raw image
  • .org Lotus Organiser data
  • .org2+ Lotus Organizer data
  • .ori Backup of original file before changes
  • .orig Mostly backup of original file before changes
  • .original Netobjects Fusion components Bbscomp message data
  • .original_epub EPUB e-book backup
  • .original_mobi MOBI ebook backup
  • .orj InterSelect PhotoScan data
  • .ork Warhammer Mark of Chaos game archive
  • .orl Object-Relational Language code
  • .ormdesigner ORM Designer project
  • .oro 3WayPack output
  • .orp Microsoft Translator for Android resources
  • .orq Online Certificate Status Protocol (OCSP) request data
  • .ors Online Certificate Status Protocol data
  • .ort IBM Lotus Quickr Rich Text Editor document
  • .orv Oracom video data
  • .orx RadiantOne Virtual Directory Server database schema
  • .ory Sage ACT! data
  • .orz Holic game data
  • .os Google Android data
  • .os2 OS/2 system data
  • .os3 OS/2 Warp 3 data
  • .osa W32/Sober-AD data
  • .osas AppleScript library tani script
  • .osax AppleScript scripting addition data
  • .osb Sega Dreamcast sound
  • .osbd Oni sound binary data format
  • .osbx OneSafe exported backup
  • .osc Remote Installation Services client installation wizard
  • .oscd TouchOSC Interface Editor template file
  • .osd Open software description data

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "unknown-file.osd" has the file extension "osd". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

Only verified software links are provided

We have verified every software listed in our database. The software listed in our database includes links to the developer's or software's website. These links should allow you to download the right program for each file type. Using verified software from reputable sources helps minimize the risk of malware and viruses infecting your computer.