Cornerstone vs Spectra

Spectra is used by more websites in our catalog: 3,075 use Cornerstone and 7,065 use Spectra.

Cornerstone sites have the higher median Ahrefs Domain Rating (Cornerstone: 28, Spectra: 10).

Between 2026-06 and 2026-07, Cornerstone went from 0.38% to 0.35% of all tracked sites, while Spectra went from 0.42% to 0.80%. Spectra is gaining ground faster in our index.

12 websites in our catalog use both Cornerstone and Spectra.

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.