Arc XP vs MemberStack

MemberStack is used by more websites in our catalog: 366 use Arc XP and 1,929 use MemberStack.

Arc XP sites have the higher median Ahrefs Domain Rating (Arc XP: 71, MemberStack: 29).

Between 2026-06 and 2026-07, Arc XP went from 0.06% to 0.04% of all tracked sites, while MemberStack went from 0.25% to 0.22%. Arc XP is gaining ground faster in our index.

No. A site runs a single CMS / website platform, so Arc XP and MemberStack are mutually exclusive.

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.