KMTech Cyclone RX Playstation Joystick Gamepad Adapter for Commodore C64 C128 | eBay
Boffintronics C64 / Atari Joystick Adapter for Raspberry Pi
Retronics USB Joystick Adapter and Other Coolness with V-USB | Code and Life
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
USB Joystick Adapters – breadbox64.com
C64 Joystick Adapter | Hackaday
USB Joystick Adapter | nIGHTFALL Blog / RetroComputerMania.com
Connect USB Joystick to Commodore C64 - Arduino Project Hub