The Open Document Format for Office Applications (ODF), also known as OpenDocument, is an XML-based file format for spreadsheets, charts, presentations and word processing documents. It was developed with the aim of providing an open, XML-based file format specification for office applications.

The standard was developed by a technical committee in the Organization for the Advancement of Structured Information Standards (OASIS) consortium. It was based on the Sun Microsystems specification for OpenOffice.org XML, the default format for OpenOffice.org, which had been specifically intended "to provide an open standard for office documents."

In addition to being an OASIS standard, it was published as an ISO/IEC international standard ISO/IEC 26300 — Open Document Format for Office Applications (OpenDocument).

Specifications

The most common filename extensions used for OpenDocument documents are:

Middle East Technical University (commonly referred to as METU; in Turkish, Orta Doğu Teknik Üniversitesi ODTÜ) is a public technical university located in Ankara, Turkey. The university puts special emphasis on research and education in engineering and natural sciences, offering about 40 undergraduate programs within 5 faculties, and 97 masters and 62 doctorate programs within 5 graduate schools. The main campus of METU spans an area of 11,100 acres (4,500 ha), comprising, in addition to academic and auxiliary facilities, a forest area of 7,500 acres (3,000 ha), and the natural lake Eymir. METU has more than 95,000 alumni worldwide. The official language of instruction at METU is English.

Over one third of the 1,000 highest scoring students in the national university entrance examination choose to enroll in METU; and most of its departments accept the top 0.1% of the nearly 1.5 million applicants. METU had the greatest share in national research funding by the Scientific and Technological Research Council of Turkey (TÜBİTAK) in the last five years, and it is the leading university in Turkey in terms of the number of European Union Framework Programme (FP) projects participation. Over 40% of METU's undergraduate alumni choose to pursue graduate studies.

The term ODT can refer to several things, among them: