For buyers
How to read this catalog — what a listing claims, why published prices rarely compare, and the vocabulary the filters use.
Four pages, in the order they are useful.
Reading a listing — every field on a tool's page, and what it does and does not claim. Start here if a listing has told you something surprising.
Pricing units — why "$15 per month" and "$0.05 per page" are not two points on the same scale, and what we do about it.
The price calculator — the answer to the above. Give it your volume and it costs each plan at the vendor's own published rate.
Glossary — media, deployment, method, pricing model, compliance, platform, capability, audience: the eight dimensions every filter is built on.
If you want to know how the numbers got here in the first place, that is the methodology.
How we verify prices and decide what gets listed
Where every price in this catalog comes from, how we mark its provenance, what a listing has to clear to be published, and how to correct us.
Reading a listing
What each field on a tool's page means, what it claims, and the places where an absent value is a fact rather than a gap.