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
The .txt file extension is one of the most ubiquitous file types. The file generally consists of plain text only and contains no formatting. Almost any application that can handle text can open a .txt file. As a result this format remains popular due to its support across all platforms and Operating Systems. The file type is one of the oldest file types in existence with its origins tracing back to the first computers.
A .txt file normally uses a basic character set which contains letters, numbers and symbols. A typical example of this would be the ASCII character set. The main alternative to ASCII is Unicode. Unicode is a rival format for text files. A plain text file should only contain several non-printable charaters such as new lines, tab and form feed.