Best all-in-one platform when you run paid and organic together
Semrush is the broadest marketing research platform: organic and paid search, content, social and PR in one subscription. That breadth is its advantage and the reason it feels cluttered next to Ahrefs.
Best affordable option for learners and small in-house teams
Moz is the affordable, approachable option: smaller data sets than Ahrefs or Semrush, but clearer explanations and a lower price. Domain Authority remains its most cited contribution and its most misused metric.
Best on-page optimisation for teams briefing writers at volume
Surfer scores drafts against the pages currently ranking for a keyword, giving writers a concrete target. Excellent as a content workflow tool, and easy to over-apply into formulaic writing.