ODT (Open Document text) file format is a word processing file used by Apache’s OpenOffice Writer. This format is similar to DOC/DOCX file format of Microsoft Word. However, ODT is XML-based open source document which doesn’t require any license to be purchased. The file extension is compatible with open source applications such as OpenOffice and LibreOffice.

• ODT is a part of Open Office programs (ODF), developed by Sun Microsystems. Later, it was developed by OASIS (Organization for the Advancement of Structured Information Standards)
• Text documents having .ODT extension are created in OpenOffice and StarOffice, alternatives to MS Office suite
• OpenDocument text files are opened and viewed in Microsoft Word 2010 & 2013.
• OpenOffice and LibreOffice support ODT file extension.
• ODT files are compatible with NeoOffice, AbiWord , and KWord
• They can be imported in Google's Web-based word processor and Google Docs

The ODT file belongs to the category of document Files.

ODT File extension introduced by Sun Microsystems

• application/vnd.oasis.opendocument.text
• application/x-vnd.oasis.opendocument.text

Hex: 50 4B 03 04

The ODT file can be opened using following ways:

• Using Microsoft Office, Open Office, LibreOffice applications
• Using free tools mentioned below