Doc (an abbreviation for ‘document’) is a file extension for a document created by Microsoft Word, the most popular word processing program. The .doc format is used for MS Word versions of between 97 and 2003. The later version of 2007 uses a different format.
MS Word was first created in 1983 for Xenix systems under the name Multi-Tool Word. Later newer versions were written for several other platforms like DOS running IBM PCs in 1983, the Apple Macintosh in 1984, and SCO Unix, OS/2, and Microsoft Windows in 1989. The M Word programs have the ability to create and share documents using a set of writing tools. These documents may include formatted text, images, tables, graphs, charts, page formatting, and print settings.
The ODT file type is primarily associated with 'OpenOffice/StarOffice' by Sun Microsystems, Inc..
This file format is part of the Open Document Format for Office Applications (OpenDocument) 1.0 specification.
This OASIS format is expected to become an industry standard for sharing documents. It is being adopted by the OpenOffice/StarOffice version 2 software suite but may appear in other products as well.