Apps like USB diagnostics

Here are some great alternatives to USB diagnostics by DevAppliance :
Files To SD Card or USB Drive
Files To SD Card or USB Drive
★4.6
USB OTG Checker Compatible ?
USB OTG Checker Compatible ?
★4.2
Endoscope HD Camera
Endoscope HD Camera
★3.4
USB OTG CHECKER
USB OTG CHECKER
★4.4
USB OTG Checker Pro - OTG?
USB OTG Checker Pro - OTG?
★4.5
USB OTG Checker
USB OTG Checker
★4.2
Endoscope Camera - USB | Otg
Endoscope Camera - USB | Otg
★3.4
Endoscope Camera USB - HD 4K
Endoscope Camera USB - HD 4K
★3.4
Bugjaeger Premium
Bugjaeger Premium
★4.5
USB Host Test
USB Host Test
★3.8
USB OTG File Manager
USB OTG File Manager
★3.3
OTG Guru - List USB devices
OTG Guru - List USB devices
★3.8
UsbTerminal
UsbTerminal
★4.1
OTG USB - USB OTG Connector, U
OTG USB - USB OTG Connector, U
★3.9
USB OTG Checker - Check USB OT
USB OTG Checker - Check USB OT
★4.6
USB Backup
USB Backup
★4.5