Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Documents by Readdle - A central hub for all your files.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.
Wondershare PDFelement - All-in-one PDF editor