List of Extensions starting with the letter O – Name and description

List of All the File Extensions Formats and Types Starting With the Letter O

File Extension Description
.OA0 B.O.U.T. Evolution texture
.OAB Microsoft Outlook offline address book
.OAD  Suite Notaro
.OAW openArchitectureWare workflow
.OAZ NetFax Manager OAZ fax image
.ODS OpenDocument spreadsheet
Microsoft Outlook Express mailbox files
NCompass Labs internet related script
.ODT ODT text document
MindRender Virtual Reality Explorer Kit (VREK) object files
.OEDB Microsoft email database
.OEM OEM data used during device installs
.OET eSignal order entry ticket
.OIL Open Image Library Format image format
.OUTLINE  FontTwister letter outline
.OUTLOOK97 Microsoft Outlook custom mail
.OUX Bibexcel