R

retrocomputing

8-Bit Wonders is a flexible and easy to use Commodore 8-bit emulator with builtin games. You can play both old and new pixel games in the style of the 80s while retaining all the advantages of your modern Android device (of course, other programs besides games also work). 8-Bit-Wonders is based on VICE and adds an androidish user interface.

A port of librw and re3 to the Dreamcast https://dca3.net

Xcpc - Amstrad CPC emulator for Linux, BSD, Unix [this repository is a mirror]

https://www.xcpc-emulator.net/

PDP-11/40 (aka 11/35) emulator for various microcontrollers, some 11/45 stuff thrown in, but not enough for more than UnixV6 or similar age OSes.