FRANK is based on Raspberry Pico (RP2040/RP2350), it supports emulation for a variety of platforms, including ZX Spectrum, IBM PC, NES/Famicom, NEC PC Engine, Atari 800 and many more. FRANK support HDMI, VGA, composite video, USB keyboards and mice, as well as game controllers. FRANK is designed to be easy to use and configure, with a user-friendly interface and a wide range of customization options. And yes, it's open source!