Open Sourced Browser-based OS

Self-Started, 2026 · Case study by Will Dzierson

Tags: TypeScript, Prototyping, LLMs, AI

Project link: https://github.com/wdzierson/aspect-os

My contribution

Built with the partnership of Opus 4.6

The work

Trying building more in public this year.

First up: a React library for building macOS-style windowed desktop environments in the browser. Real multi-window management, menu bar, system tray, desktop icons, virtual file system — the full OS shell, in ~80 KB total.

Grew out of a bigger project I've been working on. Figured it might be useful to others.

MIT licensed, sample apps included.

Images and video