The WPS file format is very similar to the DOC format, it too is a text document but it is created with Microsoft Works Word Processor; and does not include advanced formatting options and macros that a Word document may contain. Most versions of Microsoft Word can open a WPS file, as well as Microsoft Publisher. However this format has been discontinued since 2006 and replaced with the standard MS Word DOC format.
The file format WPS is used by Microsoft Works Word Processor files. These files contain word processing documents created by the Microsoft Works software suite. WPS files contain richly formatted text as well as images, clipart and tables. A C++ library exists, called libwps which allows reading and writing of WPS documents, this library allows applications such as OxygenOffice and NeoOffice to open and edit WPS files.
Microsoft Word Microsoft Works Word Processor NeoOffice OxygenOffice Works Converter
DOCX was introduced with Microsoft Word 2007, it's based on open XML and uses ZIP compression for smaller file sizes. The benefit of having open XML is that it is able to be read by applications, platforms and Internet Platforms. However to open it using any Microsoft Word that predated 2007 would require DOCX to be converted into a normal doc format.
DOCX improves file and data management and data recovery. DOCX extends what is possible with the binary files of earlier versions. Any application that supports XML can access and work with data in the new file format. The application does not need to be a Microsoft product it can be any application. Users can also use standard transformations to extract or repurpose the data. In addition, security concerns are drastically reduced because the information is stored in XML, which is essentially plain text. Thus, the data can pass through corporate firewalls without hindrance.
Microsoft Word 2007 Microsoft Word 2008 (MAC) OxygenOffice Professional (Linux) Word 2010