Open-source in-browser code editor and REPL in 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.
Open-source in-browser code editor and REPL in 10+ languages launched on June 29, 2023 with 5 votes, #1,966 of 4,655 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 3 years on.
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Open-source in-browser code editor/executor with REPL, 10+ languages2023 · github.com · ▲29I 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.
- IMI made an in-browser code editor with code replay and REPL2023 · logicboard.com · ▲87
I made a Logicboard.com — A collaborative code editor with code-replay feature. Code-replay lets you run the coding session like a movie, I wrote a blog post on how I implemented this: https://logicboard.com/blog/code-replay You can try out the demo here: https://logicboard.com/demo/:replay And play around with the code editor here: https://logicboard.com/demo/ Logicboard also has an REPL shell, just type "start()" and hit enter in the output area.

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