KlassicOS

A web-based Operating System (OS) that recreates the classic look and feel of KDE 1.0 and old computer in general.

KlassicOS is build with HTML, CSS, and vanilla JavaScript.

KlassicOS use the retro aesthetic of late-90s Linux environments.

main.mov

Features

• Window Management: Draggable, resizable, and stackable windows with classic 3D borders
• BIOS Boot Animation: An animation inspired by old computer startup
• Taskbar & K-Menu: A recreation of the application launcher, window focus tracking, and a live system clock
• Retro Applications: Includes working recreations of classic software:
• • Konsole: A bash-like terminal emulator inspired by my project NoxOS with file system commands
• • Netscape Navigator: A web browser based on the Netscape look
• • KWrite: Just a basic text editor.
• • KCalc: Just a simple calculator
• Lightweight Architecture: Client-side only, bundled with Vite

Live Demo

You can try out KlassicOS here: Vercel - KlassicOS

Local Development

To run this project locally on your machine:

1. Clone the repository on your machine.

git clone https://github.com/wirenux/klassicos.git

2. Install the dependencies by running:

npm install
# or
pnpm install

3. Start the local Vite server:

npm run dev
# or
pnpm dev

Use of AI

• Gemini: Brainstorming + README.md skeleton

Legal

This project is open-source and available under the MIT License

Trademark Notice:

KlassicOS is an independent, non-commercial fan project. It is not affiliated with, endorsed by, or sponsored by the KDE community or KDE e.V.

• "KDE" and the K Desktop Environment are registered trademarks of KDE e.V.
• Netscape Navigator and any other third-party software, icons, or brands referenced within this simulation are the properties and trademarks of their respective copyright holders.
• All visual assets and styling are recreated purely for educational purposes, software preservation, and nostalgia.