ZeroSSL
Free and paid ACME SSL certificates for any website
Alternatives
Choose Sectigo if…
- you need organization‑validated or extended‑validation
- you need code signing for Microsoft Authenticode
- you need to cover up to 100 SAN domains in one cert
- you need a centralized dashboard for lifecycle monitoring
- you need unlimited‑subdomain wildcard coverage
Choose Let's Encrypt if…
- you need an EV certificate to display your company name in
- you want a 1‑year wildcard cert to avoid frequent renewals
- you require dedicated support and SLA guarantees
- you’re willing to pay for extended‑validation options
How to Decide
ZeroSSL is known for offering free and paid ACME SSL certificates for any website and is primarily used by web developers and small businesses. The alternatives split into a few clear camps: Sectigo leans into enterprise‑grade validation levels and code‑signing options; Let’s Encrypt emphasizes completely free, automated DV issuance with wildcard support.
When comparing alternatives to ZeroSSL, the key factors that actually differentiate them are: the validation level offered (DV only versus DV/OV/EV), the pricing model (freemium versus subscription‑only), the depth of automation and API integration (basic ACME support versus extensive lifecycle‑management APIs), and the availability of enterprise‑focused features such as code‑signing or a compliance dashboard.
All Alternatives
“Enterprise-grade CA with similar SSL/TLS certificate services, but paid and broader validation options.”
“ZeroSSL offers free ACME‑compatible TLS certificates, directly competing with Let’s Encrypt on automation and cost.”
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