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jeffpar
pcjs
JavaScript2017–2025
jeffpar / pcjs

pcjs

The original IBM PC and other machine emulations in JavaScript

Web DevelopmentGames & EmulationMobile & Desktop
Explore on GitHubRead Hacker News discussions
4Distinct people
9Mentions
0Explicit recommenders
1.2KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

The original IBM PC and other machine emulations in JavaScript

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

  • jsdf/pce · linked in 6 of the same discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year9 dated mentions

Observed mentions: 2017-09-18 12:57:56 UTC to 2025-04-15 08:34:54 UTC.

02462017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20172018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 6 mentions; 0 submissions, 6 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC101
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC000
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC000
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC606
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101

What Hacker News says

9 sources
smusamashah·Apr 15, 2025
There aren't many VMs that can run in browser https://copy.sh/v86/ https://webvm.io/ https://bellard.org/jslinux/ https://jamesfriend.com.au/pce-js/ (https://github.com/jsdf/pce) https://www.pcjs.org/ (lots of hardware and OSes) (https://github.com/jeffpar/pcjs) Mac OS https://infinitemac.org/ (https://blog.persistent.info/2023/03/infinitemac-dot-org.htm...) https://jamesfriend.com.au/projects/basiliskii/BasiliskII-wo... https://jamesfriend.com.au/pce-js/pce-js-apps/
In JSLinux
smusamashah·Nov 14, 2024
Some other VMs that run in browser https://copy.sh/v86/ https://bellard.org/jslinux/ https://jamesfriend.com.au/pce-js/ (https://github.com/jsdf/pce) https://www.pcjs.org/ (lots of hardware and OSes) (https://github.com/jeffpar/pcjs) https://infinitemac.org/ (https://blog.persistent.info/2023/03/infinitemac-dot-org.htm...) https://jamesfriend.com.au/projects/basiliskii/BasiliskII-wo... https://jamesfriend.com.au/pce-js/pce-js-apps/
In WebVM 2.0: A complete Linux Desktop Environment in the browser via WebAssembly
smusamashah·Nov 5, 2024
These are VMs running built with JavaScript/WASM allowing you to run an operating system within your browser, all client side. VMs https://copy.sh/v86/ https://webvm.io/ https://bellard.org/jslinux/ https://jamesfriend.com.au/pce-js/ (https://github.com/jsdf/pce) https://www.pcjs.org/ (lots of hardware and OSes) (https://github.com/jeffpar/pcjs) Mac OS https://infinitemac.org/ (https://blog.persistent.info/2023/03/infinitemac-dot-org.htm...) https://jamesfriend.com.au/projects/basiliskii/BasiliskII-wo... https://jamesfriend.com.au/pce-js/pce-js-apps/
In Windows 95 Running in the Browser
smusamashah·Jul 11, 2024
There are a few others VMs https://copy.sh/v86/ https://bellard.org/jslinux/ https://jamesfriend.com.au/pce-js/ (https://github.com/jsdf/pce) https://www.pcjs.org/ (lots of hardware and OSes) (https://github.com/jeffpar/pcjs) Mac OS https://infinitemac.org/ (https://blog.persistent.info/2023/03/infinitemac-dot-org.htm...) https://jamesfriend.com.au/projects/basiliskii/BasiliskII-wo... https://jamesfriend.com.au/pce-js/pce-js-apps/
In WebVM is a server-less virtual Linux environment running client-side
matrix8967·Oct 28, 2022
Wow - this is crazy timing! I came across this site sometime ago - but didn't bookmark it. Just a few hours ago - I found some similar resources and wished I'd bookmarked this list. And here it is! Anyway, here's my list on the same theme: Systems running in a browser. https://simone.computer/#/webdesktops https://github.com/copy/v86 https://github.com/syxanash/awesome-web-desktops https://en.wikipedia.org/wiki/Web_desktop https://github.com/zriyansh/awesome-os https://github.com/jeffpar/pcjs https://github.com/whscullin/apple2js https://github.com/felixrieseberg/macintosh.js https://github.com/felixrieseberg/windows95/ https://github.com/1j01/98 Thanks for supplementing my notes stranger!
In A Curated Collection of Websites That Look Like Desktops
lxe·Sep 18, 2017
Fabrice Bellard's jsLinux and Jeff Parsons's https://www.pcjs.org/ are pretty fascinating. I think Bellard uses emscripten (transpiled machine and device emulator code from C to JS), while pcjs is hand-coded JS (which is neat: https://github.com/jeffpar/pcjs/blob/master/modules/pcx86/li...). Also is the source for jslinux available anywhere? The emscriptified file at https://bellard.org/jslinux/x86emu.js is quite compex.
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