Hi Product Hunt 👋 I'm Anish, the maker. Most online compilers do one thing: you run code, you get text output. That's fine for a quick test — but it's a terrible way to learn or debug an algorithm. When your sort is wrong or your recursion blows up, plain stdout doesn't tell you why. So I built an online compiler that shows you what's actually happening. Click Visualize and it replays your program line by line — arrays and matrices, linked lists, binary trees, graphs (BFS/DFS), the call stack, and even real memory (stack frames + heap with pointer arrows) animate as each statement runs. Think of it as a Python Tutor alternative — but for 8 languages, not just Python. What you get: ▎ 🧩 Run code in 20+ languages (Python, Java, C, C++, Go, Rust, C#, JS/TS, Ruby, PHP, Kotlin, Swift, and more) ▎ 🎬 Step-by-step visualization in Python, Java, C, C++, Go, Rust, C#, Lua ▎ 🧠 Memory view (stack + heap) for C, C++, Go, Python ▎ 🔗 Multi-file projects, stdin, and share-by-URL ▎ 🆓 Free, no signup, runs in the browser ▎ ▎ 🚀 Start here → https://8gwifi.org/algorithm-vis... ▎ 🐍 Python → https://8gwifi.org/online-python... I'd love feedback: which language's visualizer should I make next, and what data structures would help you most? Reply here — I'm reading everything today. 🙏

Online Compiler with Code Visualizer

Run 20+ languages online & watch your code execute live

Run 20+ languages online & watch your code execute live