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Dev tools · July 7, 2023

OS

Open-source in-browser code editor/executor with REPL, 10+ languages

I am super excited to open-source the code executor behind logicboard.com - an in-browser collaborative code editor. The backend is written in Elixir+Phoenix and implements a WebSocket API to execute code in docker containers. Next steps include making this more secure, I am considering Google's gVisor to implement better isolation between containers and the host kernel.

In plain words

This is an open-source in-browser code editor and executor that supports over 10 programming languages with a built-in REPL. The backend uses Elixir and Phoenix to run code in Docker containers via WebSocket, enabling collaborative coding. It's designed for developers who want to write and test code directly in their browser. The creator is working on enhancing security through improved container isolation.

written from the facts on this page · September 2026

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