iMazing - iMazing lets you transfer music, files, messages, apps and more from any iPhone, iPad, or iPod to a computer, Mac or PC. Manage and backup your iOS device simply without iTunes. (was DiskAid)
Documents by Readdle - A central hub for all your files.
CopyTrans Manager - CopyTrans Manager: The free iTunes alternative to manage iPhone, iPad and iPod without iTunes. CopyTrans Manager allows you to quickly drag and drop music and videos from PC directly to your iPhone, iPod or iPad.
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
CopyTrans - CopyTrans is a tool for managing the files on your iPhone or iPad through your computer's interface.
FE File Explorer - The one-stop files solution