Commodore C16, Plus 4 (+4) & C116 to Atari Joystick Adapter
USB Joystick Adapters – breadbox64.com
USBJoy2.0 - adapter. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
USB Joystick Adapter from Retronic Design on Tindie
The C64 Joystick Adapter
Amiga joystick USB adapter (HID) - Retro32
Joystick Adapter C16, C116, Plus/4 - short
9 Pin Joystick to USB Adapter
USB Adapter For DB9 Joysticks Atari / Amiga / Commodore / MSX / SMS / emulators | eBay
USB Adapter für DB9 Joysticks ( Amiga , Commodore , Atari ) | eBay