Hello, I created a browser-based operating system called CinnaOS. It features a DIY-made command prompt; this entire project was handcrafted. Thank you for visiting. I spent two full days on this project, and I will provide better updates soon. This is the 4rd version (version 4.0 beta). lol trololo

here is my 88px by 31px (i think) : 

<a style="display: inline-block; width: 88px; height: 31px; background-color: #333333; color: #60a6ff; font-size: 20px; font-family: 'Courier New', monospace; text-align: center; line-height: 41px; text-decoration: none; border: 1px solid #555; box-shadow: inset 0 0 4px #60a6ff; box-sizing: border-box; overflow: hidden; white-space: nowrap;" href="https://cinnaos.neocities.org" target="_blank"> CinnaOS </a></p>

Happy 1,000 views! (1,000 views on neocities) yay!!

And now 4000 views thank you for your support.

Visit the CinnaOS subreddit at https://www.reddit.com/r/CinnaOS/

Launch CinnaOS

Or download the source code:

Download CinnaOS Source

cinnaos.neocities.org     or     

CinnaOS

Release date: May 30, 2025

The owner reviewing CinnaOS: I reviewed cinnaos.neocities.org, and it's a charming simulated web-based operating system! The interface features a retro aesthetic, complete with a taskbar and various applications, including Terminal, Notepad, Clock, Calendar, Settings, and Paint. Each app opens within the browser, providing a nostalgic desktop-like experience. cinnaos.neocities.org The Paint application allows for drawing directly on the canvas, and the Save Drawing button functions correctly, enabling you to download your artwork as a PNG file. The overall design is cohesive and user-friendly, making it a delightful project to explore.

“CinnaOS's official wallpaper, shot by the dev themselves" yep it was - CinnaOS_dev

ur cool - CinnaOS_dev 

Pre-alpha. This is the earliest stage, where the OS is still under heavy development and may not be functional or stable. Alpha. This stage involves internal testing and development, with features still being added and refined. Beta A beta version is released to a larger group of users (beta testers) for feedback on functionality, usability, and stability.

Version Lists and major releases:

CinnaOS version 1.0

CinnaOS version 2.0

CinnaOS version 3.0

CinnaOS version 4.0 beta

NEVER RUN sudo rm -rf /* let me explain so I was dual-booting Windows 10 and Linux Ubuntu. I was curious about sudo rm -rf /* and then I typed it and pressed enter and it started to delete as many files in its path and then even touched windows 10 and bricked my pc now no ssd shows up and it keeps booting in bios/uefi and yea :/ Not everything in life will be good.