Free Opener is described as 'Allows users to view, edit and print many different types of files without having to download specialty software. Currently, the software supports over 80 different file formats including Microsoft Office Files (.doc, .docx, .ppt, .pptx, .xls, .xlsx, .xlsm, .msg,' and is a PDF Reader in the file management category. There are more than 25 alternatives to Free Opener for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad apps. The best Free Opener alternative is Bandizip, which is free. Other great apps like Free Opener are Qoppa PDF Studio, Document Viewer, Microsoft Photos and QuickViewer.