WebOSx

WebOSx (C)2026 By Creepy Cat

A desktop operating system simulation that runs entirely in a single browser tab. No backend, no build step, no framework,  just HTML, CSS and vanilla JavaScript, loaded as plain script  tags.

GitHub Link

Online Demo

Everything you'd expect from a toy OS is here: draggable/resizable windows, a taskbar, a Start menu, a language switcher, a real virtual file system, and about twenty bundled applications (terminal, file explorer, notepad, image viewer, MP3/video players, calculator, games, and more).

Tested on YouTube:

Note: For now, the package is free up to version 4.x, but I'm planning a paid version 5 soon that will include some really cool features :)

WebOSX License: Here

🖥️ Desktop Environment

• Full window manager: drag, resize, minimize, maximize
• Taskbar + Start menu with search
• Desktop icons you can freely show/hide from Settings
• Session persistence — your open windows and layout are restored automatically
• Available in 6 languages (EN, FR, ES, DE, IT, PT)

🎨 Customization

• Global color theming
• Optional 3D relief style
• Glassmorphism ("glass") mode
• Animated WebGL wave background, PS3 XMB-inspired

📦 Built-in Apps

• Productivity: Notepad, To-Do list, Sticky Notes, Calendar, Timer & Stopwatch, Calculator
• Media: MP3 Player, Video Player, Image Viewer
• Utilities: File Explorer (sandboxed virtual filesystem), Unit Converter (with ASCII/Binary/Hex/Base64), Password Generator
• Live Data: Crypto price tracker, animated Weather app
• Fun: Minesweeper, Eyes (xeyes tribute)
• Networking: Peer-to-peer file transfer & live Chat, both via WebRTC — no server or account needed