Power Document Editor is a word processor with similar functionality and file support to Microsoft Word or WordPerfect. It has extensive WYSIWYG word processing capabilities, but can also be used as a basic text editor.

The most important function is that it can view and edit .doc,.docx files which is create by Microsoft Word.
Of course, it can also create .doc and .docx documents too.

Once you get it , you can open, view, edit, save and print many common files.
That is very useful and interesting.

Power Document Editor can open many file formats
-Microsoft Word 2007-2016 (.docx)
-Microsoft Word 97–2003 (.doc .dot)
-Microsoft Word for Windows 2.0 (.doc .dot)
-Microsoft Word 4/5/6.0/95 (.doc .dot)
-Microsoft RTF (.rtf)
-Microsoft Word 2003 XML (.xml)
-Microsoft Publisher (.pub)
-Microsoft Works (.wps .wks .wdb)
-Microsoft Write (.wri)
-WordPerfect Suite 2000/Office 1.0 (.wps)
-WordPerfect (.wpd)
-Microsoft Pocket Word (.psw)
-HTML (.html .htm)
-AbiWord (.abw .zabw)
-Adobe PageMaker (.pwd .pm3 .pm4 .pm5 .pm6 .p65)
-AppleWorks word processing (.cwk)
-Apple Pages (.pages)
-AportisDoc (.pdb)
-Hangul WP 97 (.hwp)
-Ichitaro 8/9/10/11 (.jtd .jtt)
-Microsoft Pocket Word (.psw)
-QuarkXPress 3–4 (.qxp)
-Software602 (.602)
-StarOffice StarWriter 3/4/5 (.sdw .sgl .vor)

In addition to above of these, it can still edit other many common file formats
such as .ppt .pptx .xls .xlsx .pdf and so on.