I built a Unix-like OS running in browser!

The author built yOS, a Unix-like operating system running entirely in the browser, featuring a lean kernel, an IndexedDB-backed virtual filesystem with ext4-inspired inode/block architecture, IPC via domain sockets, and an X11-inspired display server with a Windows 2000-styled window manager. Originally intended as a simple portfolio site in SvelteKit, the project evolved into a framework-agnostic OS written in JavaScript/TypeScript with Svelte as the UI renderer. Applications are self-contained, compiled to single IIFE JavaScript files, and stored on the virtual filesystem.