Commodore 64 Emulators

https://accentual.com/bmc64 - BMC64 is a bare metal C64 Emulator (using VICE) for the Raspberry Pi (Models 2 & 3). There is no bloated O/S to boot and the emulator has direct access to hardware resulting in better performance than the Linux based distributions. VICE dependencies are satisfied using circle-stdlib. An option to switch to VIC20, C128 and PLUS/4 models is included in v3.0+

Virtual Console, https://virtualconsoles.com/online-emulators/c64/ - web based C64, no download required.