Best backlink data and the cleanest interface for organic SEO
Ahrefs is the strongest data product in SEO, particularly for backlinks, wrapped in the cleanest interface in the category. Credit limits and the absence of a free tier are the main friction.
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.