All certificates can be applied for by e-mail and do not have to go anywhere. For simpler services, the process is automatic and only takes a few minutes. For more complex services, additional documents need to be sent and the issuance time is up to 5 days.
All the SSL certificates have a 14-day money-back guarantee and depending on the service a $ 10,000-1,750,000 warranty from the service provider.
DigiCert
DigiCert SSL certificates are the strongest and trusted digital certificates on the planet. It is the most expensive SSL/TLS certificate brand that provides premium quality for those who understand the cost of it. Recommended for tailored solutions.
Certificates issued by DigiCert have the Daily Malware scan tool and 256-bit encryption. All DigiCert SSL support Multi-Domain (SAN) option for an extra fee providing at least 1,500,000$ warranty with its certifications and 14-day money-back guarantee. The renewal process takes just minutes and doesn't require a callback process.
DigiCert certificate authority offers Organization and Extended Validation SSL certificates only. No Domain verification products are available.
DigiCert was established in 2003.
RapidSSL
RapidSSL® is the world´s strongest and trusted digital certificates providers DigiCert discounter brand and a leading low-cost Certificate Authority providing small and medium businesses with affordable SSL certificates. Recommended for tailored solutions.
Their SSL certificates are easy to install and generally issued within minutes without any paperwork. Also comes with free reissues and mobile support. All SSL certificates are backed by a 14-day money-back guarantee and $10,000 warranty that offers financial protection and comprehensive customer support.
Drawbacks are limited SSL certificate options and not recommended for websites with online transactions.
RapidSSL was established in 2003 and in 2017 it was acquired by DigiCert.
GeoTrust
GeoTrust is one of the world’s largest digital certificate provider with more than 100,000 customers in over 150 countries. GeoTrust offers a range of affordable SSL certificates for small businesses as well as large enterprises. GeoTrust is one of the top choices to consider if you’re looking for an SSL certificate to make your website more secure for online transactions. Recommended for tailored solutions.
QuickSSL certificates are issued within minutes and without any paperwork. True Business ID certificates require paperwork and are issued within 1-5 days depending on the level of authentication. All SSL certificates come with free reissues and mobile support. Certificates are backed by a 14-day money-back guarantee and $500,000-$1,500,000 warranty that offers financial protection.
Drawback is that there is no forum support.
In 2001 GeoTrust became a SSL certificate provider. In 2017 GeoTrust was acquired by DigiCert and gained recognition and confidence in the certification market.
Thawte
Thawte is a leading global SSL provider offering a complete range of SSL products, including EV, OV, DV, SGC, Wildcard, and SAN SSL certificates. It is recommended for special solutions for security.
Thawte offers domain, business, and extended validation. SSL 123 certificates are issued within minutes and without any paperwork. Other certificates require paperwork and are issued within 1-5 days depending on the authentication level. All SSL certificates come with free reissues and mobile support. Certificates are backed by a 14-day money-back guarantee and a warranty of $500,000 to $1,500,000, providing financial protection.
No SANs are included in the price for SAN certificates.
Thawte was founded in 1995 and has become the fifth-largest public certificate authority on the web. In 2017, Thawte joined forces with DigiCert, the world's strongest and most reliable provider of digital certificates.
Sectigo
Sectigo is the world's largest commercial certificate company with over 700,000 customers and over 20 years of experience in web trust. They offer a wide range of options, from EV to UC and ending with wildcard SSL certificates.
Sectigo SSL certificates meet the needs of both small and large web shops, meaning a wide range of pricing levels and features to choose from. Sectigo does not charge renewal fees, and all certificate applications are done online. Daily malware scanning is included in all enterprise certificates. Certificates are backed by a 14-day money-back guarantee and a warranty of $10,000 to $2,000,000, providing financial protection.
It is not recommended for special solutions for more complex systems.
Sectigo was founded in 1998, and started as Comodo. In 2004, they moved their headquarters from the UK to the US. In 2018, Comodo was renamed Sectigo.