ZeroSSL

ZeroSSL is a certificate authority and SSL management platform that issues free 90-day certificates and paid annual certificates for single domains, multiple domains, and wildcards. It addresses the need to obtain, validate, and renew SSL certificates for websites and backend systems, with validation options including email, server file upload, and CNAME verification.

The platform provides a management console, installation checks, SSL monitoring, and ACME integrations for automated certificate management. A REST API supports certificate issuance, CSR validation, and other tasks programmatically. Paid plans add ZeroSSL Protect, which includes surface scans, core scans, risk analysis, SSL/TLS reports, and checks for malware, XSS, SQL injection, and platform vulnerabilities, along with malware and database protectors.

ZeroSSL is aimed at individuals, developers, startups, and larger organizations managing SSL certificates. It offers a Free Plan with a limited number of 90-day certificates and no credit card requirement, plus paid tiers (Basic, Premium, Business, and Platinum) with increasing certificate allowances, wildcard support, support levels, and protection features. Paid plans are billed yearly, with an optional Protect add-on available on each tier.