Documents by Readdle - A central hub for all your files.
FileBrowser - FileBrowser is a multifunctional file manager for the iOS devices that are used for accessing files in both local and networked environment.
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
FE File Explorer - The one-stop files solution
GoodReader - With GoodReader on your iPhone, iPod Touch or iPad, you can read virtually anything, anywhere.