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The original IBM PC and other machine emulations in JavaScript.
PCjs uses JavaScript to emulate a small collection of hardware and software that I grew up with in the 1970s and 1980s, allowing you to experience their slow CPUs, low-resolution displays, and primitive sound effects, all in the comfort and safety of your desktop or mobile web browser.
Over time, PCjs emulations have expanded to include selected IBM PC Compatibles and more classic machines, such as Minicomputers, Programmable Calculators, Terminals, and Arcade Games. To learn more or contribute to these very modest preservation efforts, visit the PCjs open-source project on GitHub.
Graphical Unix-like operating system for x86-64 computers.
SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.
Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix.
An Operating System for Z80 computers, written in assembly
Zeal 8-bit OS is an operating system written entirely in Z80 assembly for Z80 computers. It has been designed around simplicity and portability. It is inspired by Linux and CP/M. It has the concept of drivers and disks while being ROM-able.
The Amsterdam Compiler Kit is a cross-platform compiler and toolchain suite that is small, portable, extremely fast, and extremely flexible. It targets a number of low-end machines including the Z80, 8086 and 80386, but there are many other code generators available. It supports several languages, including ANSI C, B, Pascal and Modula-2, and contains integrated runtime libraries including a libc.
cool-retro-term is a terminal emulator which mimics the look and feel of the old cathode tube screens. It has been designed to be eye-candy, customizable, and reasonably lightweight.
Webbased old-school Amiga music tracker in plain old javascript - Plays and edits Amiga Mod files and FastTracker XM files.
Browser-based old-school Amiga Music Tracker in plain old JavaScript.
Old x86 IBM PC emulator