We publish a substitute list only where a record says what kind of product it is. codepen.io's does not yet, so this page names none. The IDE & Code Editors category lists every offer we track alongside it.
Current codepen.io Situation
Risk Level:source unconfirmed
Why: We could not read the page we cite for codepen.io when we last looked, on 2026-11-05. We are not publishing a stability judgement for it until that is fixed.