Fillout vs Formstack

Formstack is used by more websites in our catalog: 114 use Fillout and 1,318 use Formstack.

Formstack sites have the higher median Ahrefs Domain Rating (Fillout: 32, Formstack: 43).

Between 2026-06 and 2026-07, Fillout went from 0.02% to 0.01% of all tracked sites, while Formstack went from 0.17% to 0.15%. Fillout is gaining ground faster in our index.

0 websites in our catalog use both Fillout and Formstack.

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.