GlobalSign vs ZeroSSL

GlobalSign is used by more websites in our catalog: 5,990 use GlobalSign and 2,425 use ZeroSSL.

GlobalSign sites have the higher median Ahrefs Domain Rating (GlobalSign: 59, ZeroSSL: 23).

Between 2026-06 and 2026-07, GlobalSign went from 0.85% to 0.68% of all tracked sites, while ZeroSSL went from 0.29% to 0.28%. ZeroSSL is gaining ground faster in our index.

No. A site runs a single SSL certificate authority, so GlobalSign and ZeroSSL 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.