ODT is one of the options for the text file format, which was in little demand and gained relative distribution only in 2014, when Google Docs began to use the ODF format. It takes its name from the OpenDocument Text Document, and is used in office programs that are based on utilities like Open Office or LibreOffice. The open standard ODF (OpenDocument Format) was created by the OASIS community and was intended for the free creation, editing, storage and exchange of office documents. Within its framework, the ODT format also allows the use of databases, presentations, images, tables in text files.
DOC is the most popular text file format. Its full name is Microsoft Word Document, but the short version is more convenient and practical. This format was created for working with text documents in a paid text editor Microsoft Word office suite Microsoft Office. A file of this format contains not only a text document itself, but also a complete set of data on its formatting - paragraphs, indents, fonts, lists, text alignment, and much more. In addition, the DOC format makes it possible to include tables, charts, images in a text document. Working with such files is also available in many free programs or online services.