GrowthBook vs Optimizely

Optimizely is used by more websites in our catalog: 200 use GrowthBook and 1,701 use Optimizely.

Optimizely sites have the higher median Ahrefs Domain Rating (GrowthBook: 53, Optimizely: 54).

Between 2026-06 and 2026-07, GrowthBook went from 0.03% to 0.02% of all tracked sites, while Optimizely went from 0.21% to 0.19%. GrowthBook is gaining ground faster in our index.

0 websites in our catalog use both GrowthBook and Optimizely.

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.