Because everything is running in a JavaScript engine, performance is the biggest hurdle. On a standard laptop, booting XP in PCjs can take several minutes. Once loaded, there is a noticeable "input lag" when clicking the Start menu or opening My Computer.
Want to show a teenager what Windows XP felt like? Load PCjs in 30 seconds. No setup, no installation, no mess. Pcjs Windows Xp
"You've got mail."
Perfect for testing legacy web compatibility or old "legacy" apps. Because everything is running in a JavaScript engine,
Today, that blue sky rarely shines on modern hardware. The hardware that ran Windows XP natively has largely been recycled, and the OS itself reached its "End of Life" a decade ago. Yet, ironically, Windows XP is more accessible today than it has been in years. You don’t need a dusty tower from 2003; you just need a browser tab. Want to show a teenager what Windows XP felt like
Windows XP installations can easily exceed 10GB, making them difficult to host as simple browser-loaded disk images compared to the megabyte-sized floppies used for DOS or Windows 3.1. Practical Alternatives for Windows XP
. While the project emulates a wide range of vintage hardware and software using JavaScript, its primary focus is on machines from the 1970s and 1980s. PCjs Machines PCjs Project Scope Supported Systems