Files - Keep everything organized without breaking your flow. Dropbox brings your files together, in one central place. They're easy to find and safely synced across all your devices—so you can access them anytime, anywhere.
Files Pro - Files Pro is a multifunctional document manager and reader for the iDevices.
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.
FileBrowser - FileBrowser is a multifunctional file manager for the iOS devices that are used for accessing files in both local and networked environment.
Files-finder edition - If you have to name one app which you miss most on your iPad, what would that be?