Run, learn, and debug x86-64 Assembly code directly from your browser

In plain words

This is a browser-based x86-64 assembly playground that allows users to write, run, and debug assembly code directly in their browser. Built on a WebAssembly version of the Blink emulator, it requires no backend server and runs entirely client-side with a minimal ~200KB footprint. The tool is designed for teaching assembly and can be embedded in blog posts, functioning similarly to code-sharing platforms like CodePen or JSFiddle.

written from the facts on this page · September 2026

From the sources

An online assembly editor, emulator, and debugger for the x86-64 architecture. Learn and experiment with assembly and system internals directly in your browser—no setup required

x86-64 Playground An online assembly editor and GDB-like debugger Launch the app Learn more Features x86-64 Playground is a web app for experimenting and learning x86-64 assembly. The Playground web app provides an online code editor where you can write, compile, and share assembly code for a wide range of popular assemblers such as GNU As, Fasm and Nasm. Unlike traditional onlide editors, this playground allows you to follow the execution of your program step by step, inspecting memory and registers of the running process from a GDB-like interface. You can bring your own programs! Drag and drop into the app any x86-64-Linux static executable to run and debug it in the same sandboxed…from x64.halb.it

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