BoxTurtle is exactly what it appears to be — an open source AMS style filament changer for Klipper machines. BoxTurtle requires the AFC-Klipper Add-On (found here). The goal of BoxTurtle is to deliver a user experience as close to an AMS as possible in vanilla Klipper. e.g. an "AMS" for any klipperized printer regardless of form factor but VORON Design printers in particular.
Github
https://github.com/ArmoredTurtle/BoxTurtle