The OpenDocument format (ODF), short for the OASIS Open Document Format for Office Applications, is an open document file format for saving and exchanging editable office documents such as text documents (including memos, reports, and books), spreadsheets, charts, and presentations. This standard was developed by the OASIS industry consortium, based upon the XML-based file format originally created by OpenOffice.org.
The standard was publicly developed by a variety of organizations, is publicly accessible, and can be implemented by anyone without restriction. The OpenDocument format is intended to provide an open alternative to proprietary document formats including the popular but undocumented DOC, XLS, and PPT formats used by Microsoft Office, as well as Microsoft Office Open XML format (this latter format has various licensing requirements that prevent some competitors from using it). Organizations and individuals that store their data in an open format such as OpenDocument avoid being locked in to a single software vendor, leaving them free to switch software if their current vendor goes out of business, raises its prices, changes its software, or changes its licensing terms to something less favorable.
OpenDocument is the only standard for editable office documents that has been vetted by an independent recognized standards body, has been implemented by multiple vendors, and can be implemented by any supplier (including proprietary software vendors as well as developers using open source software licenses such as the GNU LGPL or GNU GPL).
Since one objective of open formats like OpenDocument is to guarantee long-term access to data without legal or technical barriers, governments have become increasingly aware of open formats as a public policy issue. For example, in 2002, Dr. Edgar David Villanueva Nuñes, a lawyer and Congressman of the Republic of Perú, wrote a letter to Microsoft Peru raising questions about free and permanent document access with proprietary formats. Europe and Massachusetts in particular have been examining the ramifications of selecting a document format.