Comparison
PupWiki is a free breed-research site: dashboards, breed comparisons, guides and decision tools, funded by display ads and affiliate links. If you are early in deciding on a breed, it is worth using. This page is about which of the two answers your actual question.
Every breed dashboard, comparison, guide and tool is free, with no account. It cites a large set of authoritative sources and shows its methodology, so the facts you read are checkable. For comparing two breeds on paper at 11pm, that is a real service.
A breed dashboard tells you what a breed is generally like. It does not editorialise on who the breed is not for — the honest half of the answer. It also has no preparation curriculum you work through in order, nothing you finish, nothing you print and take to the vet, and nobody who reads your household and answers you directly. And its revenue comes from ads and affiliate links, which is worth knowing when you read a recommendation.
The breed library here is free too, and every profile carries a "who this breed is honestly not for" field, written to be useful rather than flattering. Where this site differs is what comes after the research: a six-module certification you complete, a written assessment from Kerri — a veterinary nurse who still walks dogs — and printables you keep. Free content for the research; the paid parts for the preparation.
Read a breed profile, check a toxic food, or take the free guide. Pay only if you decide you want the preparation.