Tapecart SD for Commodore 64
This is a great and tiny open-hardware project that allows loading .prg and .tcrt files from the tape port via a micro SD card (not included) at high speed.
Usage is simple, download browser.prg from https://github.com/KimJorgensen/tapecart and place it on the root of a fat32 formatted micro SD card. Then place your .prg or .tcrt files on the card. Press the usual shift and run-stop and the Tapecart SD will load the browser menu as if from an actual datasette. The speed of loading is comparable to SD2IEC.