doc The .doc filename extension is a native file extension used by the closed source document processing application Microsoft Office Word. Initially developed and used by Microsoft since 1983, the filename extension .doc continues to be supported natively even in the most recent iteration of the word processing application Microsoft Office Word 2013. The more recent .docx filename extension however was introduced by Microsoft in Office Word 2007, becoming the default filename extension. Documents to be saved in the .doc format are saved as Word 97, 2003 documents.
wps .WPS is a file extension that provides for word processing documents from Kingsoft Writer, a free alternative to Microsoft Word. The format was developed by Kingsoft, a Chinese software company, for the release of their own office suite back in 1988, WPS Office. WPS is an acronym for Writer, Presentation, and Spreadsheets.
Apart from Kingsoft Writer, .WPS is a file extension that provides for Microsoft Works, an earlier project of Microsoft before Microsoft Office. The former office suite was discontinued back in 2007 and is no longer in use. The file extension was replaced by .DOC format, a more versatile and more advanced file format and the standard for Microsoft Office Word known today.
Similar to its .DOC counterpart from Word, .WPS can provide the utility of a Word document with the exception of more advanced formatting elements and macros.