We publish a substitute list only where a record says what kind of product it is. TestTLS.com's does not yet, so this page names none. The Security category lists every offer we track alongside it.
Current TestTLS.com Situation
Risk Level:source unconfirmed
Why: We could not read the page we cite for TestTLS.com when we last looked, on 2026-11-08. We are not publishing a stability judgement for it until that is fixed.