💎 Ruby Playground

Write Ruby code below and click Run. Everything runs in your browser — nothing is sent to our servers. No signup, no install, no nonsense.

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💎

Ruby can't run inline (yet)

Some languages need a real compiler or runtime that doesn't fit in a browser. But you can run Ruby instantly on these free platforms:

Open in Replit ↗ Open in OneCompiler ↗

Sample Ruby code:

Ruby example

# Rails controller action
class UsersController < ApplicationController
    def show
        @user = User.find(params[:id])
        @orders = @user.orders.recent
    end
end

Try these Ruby examples

Click any example to load it into the editor:

A note on this playground

Code runs in your browser using open-source engines (Pyodide for Python, native JS for JavaScript, AlaSQL for SQL). Nothing is sent to OneCity's servers. No accounts, no tracking. If you save your work, copy-paste it somewhere else — refreshing the page resets the editor.