Fathom vs Siteimprove

Fathom is used by more websites in our catalog: 1,332 use Fathom and 259 use Siteimprove.

Siteimprove sites have the higher median Ahrefs Domain Rating (Fathom: 40, Siteimprove: 67).

Between 2026-06 and 2026-07, Fathom went from 0.18% to 0.15% of all tracked sites, while Siteimprove went from 0.04% to 0.03%. Siteimprove is gaining ground faster in our index.

0 websites in our catalog use both Fathom and Siteimprove.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.