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Life & fun · alternatives · 2026

24 alternatives to My x86 emulator written in JavaScript

Run KolibriOS, Linux or Windows 98 in your browser

My x86 emulator is a JavaScript-based tool that runs x86 processor instructions in a web browser. It lets developers and enthusiasts experiment with low-level x86 code and system behavior without needing specialized… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. My x86 emulator written in JavaScript launched in 2013; newer entries below may have overtaken it.

  1. 1

    Run KolibriOS, Linux or Windows 98 in your browser

    2016 · copy.sh · its alternatives →

  2. 2XA

    x86CSS is a working CSS-only x86 CPU/emulator/computer. No JavaScript required!

    Feb 2026 · lyra.horse · its alternatives →

  3. 3OS
  4. 4

    A Chip8 emulator written in JavaScript. Contribute to victorqribeiro/Chip8js development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  5. 5

    Transputer emulator written in Javascript running my operating system from 1995.

    2025 · nanochess.org · its alternatives →

  6. 6

    Run KolibriOS, Linux or Windows 98 in your browser

    2022 · copy.sh · its alternatives →

  7. 7

    NES emulator written in Rust. Contribute to pcwalton/sprocketnes development by creating an account on GitHub.

    2013 · github.com · its alternatives →

  8. 8

    Nostalgist.js is a JavaScript library that allows you to run emulators of retro consoles within web browsers.

    2023 · nostalgist.js.org · its alternatives →

  9. 9
    c64js▲100

    A commodore 64 emulator

    2016 · its alternatives →

  10. 10

    Rebuilt a Motorola 68000 emulator with 50+ instructions — runs entirely in the browser, no install. - gianlucarea/m68k-interpreter

    Mar 2026 · github.com · its alternatives →

  11. 11

    Z80-based CP/M emulator, in golang. Happily runs Zork, Microsoft BASIC, Turbo Pascal, Wordstar, etc. - skx/cpmulator

    2024 · github.com · its alternatives →

  12. 12

    Online OR1K Emulator running Linux. Contribute to s-macke/jor1k development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  13. 13

    A while back I wrote a CHIP-8 emulator (which is considered the Hello, World! of emulators and is more accurately a virtual machine since historically CHIP-8 was an interpreted language running on top of the COSMAC VIP to make game programming easier). But a few months ago I got really interested in embedded software, so decided it would be neat to port my emulator to a STM32 MCU and design a console around it as a learning experience, since CHIP-8 never existed as a physical system. I didn't know much about embedded software when I began, and even less about electronics, but I managed to…

    2022 · github.com · its alternatives →

  14. 14

    Yet another 6502 emulator that one day dreams of being an Atari 2600. - haldean/x6502

    2013 · github.com · its alternatives →

  15. 15

    Learn how classic game hardware worked. Write code and see it run instantly.

    2016 · 8bitworkshop.com · its alternatives →

  16. 16

    I've been exploring new ways of testing Ghidra processor modules. In this repo, I was able to emulate NES ROMs in Ghidra to test its 6502 specification, which resulted in finding and fixing some bugs. Context: Ghidra is used for reverse engineering binary executables, complementing the usual disassembly view with function decompilation. Each supported architecture has a SLEIGH specification, which provides semantics for parsing and emulating instructions, not unlike the dispatch handlers you would find in interpreters written for console emulators. Emulator devs have long had extensive test…

    2023 · github.com · its alternatives →

  17. 17

    Linux virtual machine, running in the browser via HTML5/WebAssembly. Networking and graphics supported.

    2021 · repl.leaningtech.com · its alternatives →

  18. 18

    To try it out, simply build the project yourself from source, or use attached bootable ISO image of the system (in Releases on Github) and run it in QEMU. https://blog.vxn.dev/rou2exos-rusted-edition

    2025 · github.com · its alternatives →

  19. 19

    This is the entire Firefox browser rendering to a element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly. Here are a few things you might find interesting: - This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets. - There is a novel WASM->JS JIT for experimental site speedup - This port cost over 25k in opus/fable tokens for debugging and JIT research This was just a fun experiment to push the boundaries of WebAssembly. For a more usable "browser in browser" experience, we also built…

    Jul 2026 · developer.puter.com · its alternatives →

  20. 20

    A multitasking monolithic Kernel based x86 targeting Operating System written in C# from scratch aiming for high-level implementation of drivers in managed environment. - amaneureka/AtomOS

    2017 · github.com · its alternatives →

  21. 21

    CHIP-8 console on FPGA. Contribute to pwmarcz/fpga-chip8 development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  22. 22

    Open-source ESP32 emulator. Run real firmware locally or in your browser — no hardware, no cloud, no subscription. - mikroverk/esp32sim

    4d ago · github.com · its alternatives →

  23. 23MI
  24. 24

    Creating a fantasy CPU emulator with React and TypeScript part 1

    2021 · maartenhus.nl · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →