We publish a substitute list only where a record says what kind of product it is. OpenAPI3 Designer's does not yet, so this page names none. The API Development category lists every offer we track alongside it.
Current OpenAPI3 Designer Situation
Risk Level:source unconfirmed
Why: The page we cite for OpenAPI3 Designer states no amount, tier or rate we can read when we last looked, on 2026-10-10. We are not publishing a stability judgement for it until that is fixed.