OpenOffice or open office may refer to:
Computing
Software
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OpenOffice.org (OOo), a discontinued open-source office software suite, originally based on StarOffice
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Apache OpenOffice (AOO), a derivative of OOo by the Apache Software Foundation, with contribution from IBM Lotus Symphony
Programming
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OpenOffice Basic (formerly known as StarOffice Basic or StarBasic or OOoBasic), a dialect of the programming language BASIC
File formats
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OpenDocument
The Open Document Format for Office Applications (ODF), also known as OpenDocument, standardized as ISO 26300, is an open file format for word processor, word processing documents, spreadsheets, Presentation program, presentations and ...
format (ODF), also known as ''Open Document Format for Office Applications'', a widely supported standard XML-based file format originating from OOo
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OpenOffice.org XML, a file format used by early versions of OpenOffice.org
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Office Open XML
Office Open XML (also informally known as OOXML) is a zipped, XML-based file format developed by Microsoft for representing spreadsheets, charts, presentations and word processing documents. Ecma International standardized the initial version ...
(OOXML), a competing file format from Microsoft
Other uses
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Open plan, a floor plan
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Open Document Architecture (ODA), document interchange format (CCITT T.411-T.424, equivalent to ISO 8613)
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OpenDoc, an abandoned multi-platform standard for compound documents, intended as an alternative to Microsoft's Object Linking and Embedding (OLE)
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