3 yrs later, my JS sandbox has 11M users and an AI agent
Some of you might remember my 2022 post about building a JavaScript sandbox alone for 6 years.A lot has happened since: • 200K monthly users → 11M total users • 23M projects created • 9 years total (yes, I started in 2016) The biggest update: I built an AI coding agent. Works like Cursor, but entirely in your browser. No downloads, no setup. Why browser-based AI coding makes sense: • Instant start (no VS Code, no API keys) • Works on any device • Perfect for business automations, landings, blogs, prototyping, learning, interviews • Share your work with one link The AI part: • All the latest 12+ models (Claude, GPT, Grok, Gemini) • Real-time streaming • Multi-file editing • Pay only for what you use Still bootstrapped. Still mostly solo. Competing with well-funded startups now, but 11M users and 18 years of refinement is hard to replicate. Yea, I'm insane. Try it:playcode.io Happy to answer questions about building a browser IDE or adding AI to a mature product!