R

retrocomputing

ShellDOS (or simply shDOS) is a retro DOS Command Shell with modern features like Linux and others.

Oficial website: https://software.webxpress.top/projects/shdos

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/

A rudimentary firmware for replicas of the Acorn Archimedes, also includes a BBC BASIC compatible interpreter as well.

This is an emulator of Elektronika UKNC (Электроника УК-НЦ/МС 0511) soviet personal microcomputer. Designed to be portable, it's using SDL3. Can be built for Windows, Linux and probably other unix flavours.

A virtual device bus that, once compiled into a PDP-11 SimH simulator, allows new devices to be added to the system without re-compiling the simulator itself. New devices run as separate processes, communicating with the main simulator through shared memory and pipes.

Bluetooth gamepad support for the Commodore 64 / Atari / Amiga, etc.

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.