i-FunBox - General file management software for iPhone and other Apple products
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)
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.
CopyTrans - CopyTrans is a tool for managing the files on your iPhone or iPad through your computer's interface.
iExplorer - iExplorer lets you easily transfer music, playlists, text messages, files and more from any iPhone, iPod, or iPad to a Mac or Windows computer and iTunes.
SynciOS Manager - Syncios is a free yet powerful cellphone to PC transfer software which can help to transfer App, Music, Photo, Video and Ebook from PC to iPod/iPhone/iPad as well as Android Phone, Android to PC, iPhone PC and iPad to PC.