Atari, C64, Amiga joystick interprets as USB keyboard - Retronic DesignRetronic Design
C64 USB Joystick Adapter
USB C64 Joystick adapter (for emulator) - Commodore Remix
USBJoy2.0E adapter - Extended Version. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
C64 Joystick Adapter | Hackaday
UPDATE] Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Classic Atari Joystick to USB Adapter - YouTube
The C64 Joystick (Electronic Games) : Amazon.co.uk: PC & Video Games
C64 USB Joystick Adapter
How to Convert Any Commodore Joystick from 9-pin to USB using The C64 Joystick - YouTube
Best USB controller to use with the Commodore 64 Mini | Android Central