By
@Wirenux
A web-based Operating System that recreates the classic look and feel of KDE 1.0. KlassicOS is build with HTML, CSS, and vanilla JavaScript.
KlassicOS is a web-based OS that recreates the KDE 1.0 desktop experience directly in the browser.
Using a VM to experience old OS is heavy, and most "Web OS" projects rely on "bloated" modern frameworks like React.
I wanted to bring back the look of early Linux without all the VM things.
I built the entire system from scratch using pure HTML, CSS, and Vanilla JavaScript, bundled with Vite (to publish it on Vercel & for dev) .
I coded a custom DOM-based window manager to handle dragging, resizing, and z-index stacking with classic 3D borders.
To make it authentic, I added an AMIBIOS boot sequence + a real-time RAM check and SVG Energy Star logo.
I also designed a modular app registry to manage and launch the system's built-in software.
This includes functional recreations of KCalc, KWrite, and a custom Netscape Navigator.
It even features Konsole, a working bash-like terminal emulator inspired by my bare-metal OS project, NoxOS.
Everything runs entirely client-side, keeping the architecture as snappy and lightweight like the 90s systems.
Updated the README to ship ! Link: https://github.com/wirenux/KlassicOS
Just add a fake BIOS loading screen
I now have a right-click menu with the ability to change the background theme
Add a the calculator app + custom width & height for application (+ some little invisible fix)
I've make web-based Operating System (OS) that recreates the classic look and feel of KDE 1.0. KlassicOS is build with HTML, CSS, and vanilla JavaScript. The difficult part of this project was finding idea off apps I can include and the Window Management. In this os there is 4 main application, KWrite to write some text, Konsole the terminal, Netscape Navigator the browser and System Info who just print the project info :-)
Add full system info app
Ready to be Ship ! https://github.com/wirenux/KlassicOS
Konsole v0.X.X-UNSTABLE now work :
There now is Desktop Shorcut
Now have resizable window
Just move the task bar to the top like the real KDE 1.0. Now the Netscape browser work (can browse button actually do things)
Just add Netscape Navigator. I’ve recreated all of the ui element in pure js + css combo ! Now i just need to add an iframe to display actual webpages.
I just add an invisible change, now the apps are in differents files. So the whole “OS” logic is in 216 lines of JS 😂
Now have taskbar and focused windows
Added: Multiple windows (text editor, system info) + “startup-menu”
Dragable window are now up !
I’m now able to spawn windows with the original KDE 1.0 style
Now have, background gradient + taskbar
