i-FunBox - General file management software for iPhone and other Apple products
Documents by Readdle - A central hub for all your files.
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)
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.
ApowerManager - ApowerManager is a versatile PC tool allowing you to manage, transfer, and backup all the data on your Android and Apple devices with clicks.
FE File Explorer - The one-stop files solution