SXW is a text file format. From the very beginning, it was created for StarOffice Writer, that is, an application that processes texts from the Sun Microsystem StarOffice office suite. StarOffice was developed by Sun Microsystems. Then it was bought by Oracle. That's why Star Office has evolved into Apache Open Office, and is now a commercial Oracle product. At the same time, it is the same software product as the free program OpenOffice.org. The only difference is that the new Open Office provides technical support for packages. The Apache Software Foundation supports the Apache OpenOffice software package, and it provides a universal set of tools designed to work with vector drawings, spreadsheets, text documents, databases, etc. The .sxw file is an OpenOffice text document that is saved in XML-based Sun XML Writer (SXW) format. Currently, the SXW format and other OpenOffice formats that are outdated have skipped ahead of the family of standard OpenDocument Format (ODF) formats with .odt extensions without preserving compatibility between them. SXW files are opened by programs such as StarOffice Writer and OpenOffice.org Writer.
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.