1. Domain Validated SSL Certificate (DV SSL): This type of SSL certificate is the most basic and the most commonly used. It verifies the domain name of the website, but does not verify any other information. For example, RapidSSL.
2. Organization Validated SSL Certificate (OV SSL): This type of SSL certificate provides more assurance than a domain validated SSL certificate because it verifies the identity of the organization that owns the website. For example, GeoTrust True BusinessID.
3. Extended Validation SSL Certificate (EV SSL): This type of SSL certificate is the most secure and provides the highest level of assurance. It verifies the identity of the organization that owns the website, as well as the domain name. For example, DigiCert EV SSL.
4. Wildcard SSL Certificate: This type of SSL certificate is used to secure multiple subdomains on a single domain. For example, Comodo Wildcard SSL.
5. Multi-Domain SSL Certificate: This type of SSL certificate is used to secure multiple domains or subdomains on different domains. For example, Comodo Unified Communications Certificate.