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OB! File - What is it and how do I open it?
The .ob! file extension is used by the Orbit Downloader Internet download software application. This download ...

OBB File - What is it and how do I open it?
Also known as Opaque Binary Blob, the OBB file format was developed by Google for their Android system. This f ...

OBI File - What is it and how do I open it?
Files with the .obi extension are most commonly associated with the Microsoft Outlook software application. Mi ...

OBJ File - What is it and how do I open it?
Files that contain the .obj file extension hold 3D object files created with computer drawing software. These ...

OCTET-STREAM File - What is it and how do I open it?
The OCTET-STREAM format is used for file attachments on the Web with an unknown file type. These .octet-stream ...

ODB File - What is it and how do I open it?
The .odb file extension is most commonly associated with the OpenOffice database application. OpenOffice OpenD ...

ODG File - What is it and how do I open it?
Files that contain the .odg file extension are most commonly associated with OASIS vector graphic files. Drawi ...

ODM File - What is it and how do I open it?
Files that contain the .odm file extension are most commonly associated with the OpenOffice OpenDocument softw ...

ODP File - What is it and how do I open it?
Files that contain the .odp file extension are presentation documents that have been created using the StarOff ...

ODS File - What is it and how do I open it?
ODS stands for Open Document Spreadsheet. Files that contain the .ods file extension are normally created by t ...

ODT File - What is it and how do I open it?
The .odt file extension is given to office document text files that have been created in the OpenOffice and St ...

OEACCOUNT File - What is it and how do I open it?
Files with the .oeaccount extension are most commonly associated with the Windows Mail software application. T ...

OFC File - What is it and how do I open it?
Files with the .ofc extension contain financial transaction information. The OFC file format was created by Mi ...

OFM File - What is it and how do I open it?
The .ofm file extension is a proprietary file type which was developed by Scansoft. Nuance Communications is n ...

OFX File - What is it and how do I open it?
OFX is an acronym for Open Financial Exchange. The OFX file format allows for the electronic exchange of finan ...

OGG File - What is it and how do I open it?
The .ogg file extension is most commonly associated with the Ogg Vorbis file format. "Ogg" referrs t ...

OGM File - What is it and how do I open it?
Files that contain the .ogm file extension normally store Ogg media files. The Ogg media file format is a free ...

OGV File - What is it and how do I open it?
Files that contain the .ogv file extension are most commonly associated with the Ogg Vorbis video encoding tec ...

OLD File - What is it and how do I open it?
Files that contain the .old file extension are most commonly used to indicate that a file on a user's hard dri ...

OLS File - What is it and how do I open it?
The .ols file extension is most commonly used by Microsoft Office software applications. The OLS files contain ...

OMX File - What is it and how do I open it?
The .omx file extension is most commonly associated with the Ots audio software. The OMX files contain media i ...

ONE File - What is it and how do I open it?
The files that contain the .one file extension are most commonly created by the Microsoft OneNote computer sof ...

OPD File - What is it and how do I open it?
OPD (OmniPage document) file extension is being used in documents generated and/or saved using OmniPage scanni ...

OPDOWNLOAD File - What is it and how do I open it?
These .OPDOWNLOAD files are temporary files that contain partially downloaded data. The .opdownload file forma ...

OPF File - What is it and how do I open it?
OPF stands for Open Packaging Format. The Open Packaging Format is a standard that is a part of the EPUB eBook ...

More file types starting with O

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