Pure JavaScript Unix-Like Web Based OS
slummy writes " JS/UIX 'is an UNIX-like OS for standard web-browsers, written entirely in JavaScript (no plug-ins used). It comprises a virtual machine, shell, virtual file-system, process-management, and brings its own terminal with screen- and keyboard-mapping.' If only you didn't need an OS to run the web browser on."
The site is already dead, so here's something else - not a complete OS, but still has a (working) browser, games etc.
Underholdning.info
Shameless plug: I've made something similar here: http://wakaba.c3.cx/desktop-test/desktop.pl
Log in as test:test. It's fairly useful for doing management of a web server. Try not to Slashdot it too badly, OK?
Mor information here: http://wakaba.c3.cx/sup/kareha.pl/1116806324
For another really cool example of what you can do with JavaScript, click here.
pi = 2*|arg(God)|