WPS Office is one of the most popular software for free. It is made combined of Microsoft Office and Google Docs/Apps. For windows operating system WPS office is the most familiar office suites. WPS Office is a fully office suites that help you to make file like you do in the MS Office.
This software gives you a lots of feature that you will like it. It has almost 100 of free templates, 230 fonts, track changes, comments, spell checker and so on. By using this software you can view, edit, create any kind of document file according to your wish.
Needless to say, WPS Office is a freeware and it is supported with all version of windows operating system. It has a nice interface for the users and a nice collection of features. So to be a professional file editor you should try it once!.