What tells you why you are not being found, and what to fix?

Semrush is on this list because it is the closest thing to a single marketing-visibility toolkit: keyword research, competitor comparison, site audits, rank tracking, local listings and paid-search data in one subscription.

For a small team with one person doing all of SEO, that breadth beats a better single-purpose tool. You can answer “what should we write”, “why did that page drop” and “what are they bidding on” without three logins and three invoices.

Best for in-house marketers and agencies who need to cover several jobs and report on them. The free account is real but narrow — enough to look something up, not enough to work in.

Skip it if you only need one of these jobs done. Buying the whole toolkit for backlink data or rank tracking alone is the most expensive way to get either.

Ahrefs earns its slot on link data. Its index of backlinks and referring domains is the strongest of the tools here, and if your work involves digital PR, link building or working out why a competitor outranks you on authority rather than content, that is the number you live in.

The interface is unusually direct for the category: paste a domain, get the picture. Less time spent assembling a report is a real feature when the report is weekly.

Best for SEO specialists, agencies and anyone whose growth plan is link-led. If you own the site you are studying, their free Webmaster Tools tier gives you audit and backlink data for that site without a subscription.

Skip it if your work is content-led and you need a free or cheap way in. There is no general free tier for researching sites you do not own, and usage limits are worth understanding before you buy.

Moz Pro is on this list because it is the gentlest entry point to SEO tooling that still does real work. Rank tracking, site crawls and keyword research are laid out for someone who is learning the discipline, not someone who already thinks in link graphs.

It comes with the clearest teaching material in the category, which matters more than it sounds: most small businesses do not need a better tool, they need to understand the one they have.

Best for a small business owner or generalist marketer taking SEO seriously for the first time, and for consistent rank tracking without a heavyweight subscription.

One label to read correctly: Domain Authority is Moz’s own score, useful for comparing sites against each other and not a metric Google publishes or uses.

Skip it if you need the deepest link index or the widest toolkit. On raw data breadth, Ahrefs and Semrush are ahead, and specialists will hit the edges of Moz Pro sooner.