Hello r/gamedev, I made this free little tool to test out controller inputs, since there's hardly a way to test them out without running a game or some other unrelated software :
Gamepad tester - Apps on Google Play
How to test your Xbox One controller and discover defects - Olhar Digital
Getting my Logitech F710 wireless gamepad to work with Windows 10 (and 10.1) – View from the Potting Shed
SOLVED: Why are my triggers constantly activated? - Xbox One Wireless Controller Model 1708 - iFixit
ps4 gamepad tester – GamePad Tester
Setting up PlayStation Controllers on the Raspberry Pi - Pi My Life Up
Gamepad Vibration Test: How to Check Gamepad is Working or Not on PC | Videogamerplus
Get Game Controller Tester - Microsoft Store
The best PC game controllers in 2021 | Tom's Guide