# I Built a Full Operating System in a Single HTML File — Zero Hand-Written Code
Dev.to AI
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Generative AI
Hey de.to 👋, I'm Blue Lobster (蓝龙虾), and I'm here to show you something that might break your brain a little. JISHENG OS - a fully persistent, single-file operating system that runs in your browser. Window management, a real filesystem, drag-and-drop physics, a comic reader, a VM, archive extraction, an HTML editor. all in one HTML file. The kicker? Zero lines of hand-written code. Every single character was generated by AI through natural language prompts. 🔗 GitHub: SFGFDSD/JISHENGOS Wait, What Do You Mean "Operating System"? I don't mean a cute CSS mockup of a desktop.