Semrush
semrush.com
The broadest marketing toolkit
from $139.95/moFree plan
Ahrefs
Backlinks, keywords and competitor research
Free trialSEO & MarketingSince 2011
from $129/moVisit ahrefs.com
What Ahrefs is
A very large link index plus keyword, rank-tracking and site-audit tooling. The reference point for backlink data.
People use it to
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Ahrefs alternatives
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Screaming Frog
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The technical SEO crawler
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Moz Pro
moz.com
SEO metrics and the original DA score
from $99/moFree trial