Visualizing Code Internals with BareMetal

Most developers spend years writing code… but very few actually see what the code becomes after we hit “Run”. That thought kept bothering me. Because we learn: ✅ syntax ✅ frameworks ✅ DSA ✅ system design buzzwords But the moment someone asks: “What’s really happening under the hood?” the answer becomes… hand-wavy. So I built BareMetal — an interactive runtime visualizer. Not another tutorial. Not another blog. A platform where you can literally watch what languages do internally. Here was my thought process while building it: 1) Learning by reading wasn’t sticking I realized I understand things best when I can: change inputs see output instantly compare behaviors side-by-side So I wanted a “CS lab” experience, but browser-based. 2) I wanted the “wow” moment instantly The hook had to be: Type code → instantly see what it turns into. That’s why the Compiler Lab was the first thing I built: C++ / Go / Rust → real assembly output (via Godbolt API) Python / JavaScript → simulated bytecode (for conceptual clarity) 3) Compilers are cool, but runtime is where confusion starts So I added interactive labs around the things devs actually struggle with: Memory (stack vs heap, GC, ownership) Concurrency (event loop vs goroutines vs OS threads) Runtime cost (hidden performance traps) Crashes (panics, segfaults and safety guarantees) 4) I made it open source on purpose Because this platform can grow with contributions: more languages, more labs, better visualizations. 🚀 Live demo: https://lnkd.in/dHsnuRdt ⭐ GitHub: https://lnkd.in/dhdj_4QC If you’re a student/dev who ever wanted to truly understand what’s happening behind the scenes — try it and tell me what lab you want next. (Also open to feedback/PRs!) #opensource #webdev #programming #compilers #react #learninginpublic

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