Certificate authorities

GoDaddy Inc. is an American publicly traded Internet domain registry, domain registrar and web hosting company headquartered in Tempe, Arizona, and incorporated under the Delaware General Corporation Law. GoDaddy is the world's fifth largest web host by market share, with over 62 million registered domains. The company primarily serves small and micro companies, which make up most of its 20 million customers.

entity that issues digital certificates

certificate authority launched in 2015

Xcitium (formerly Comodo Security Solutions Inc.) is a cybersecurity company, including Zero Trust cybersecurity, based in Bloomfield, New Jersey, United States. In 2022, the company rebranded as Xcitium. Also formed from the former Comodo Security Solutions was Sectigo, a certificate lifecycle management company based in the US and founded in 2018.

CAcert.org is a community-driven certificate authority that issues free X.509 public key certificates. CAcert.org relies heavily on automation and therefore issues only Domain-validated certificates (and not Extended validation or Organization Validation certificates).

American-based technology company and a subsidiary of Web.com

DigiCert, Inc. is a digital security company headquartered in Lehi, Utah. DigiCert provides public key infrastructure (PKI) and validation required for issuing digital certificates or TLS/SSL certificates, acting as a certificate authority (CA).

Entrust Corporation is an American digital security company headquartered in Shakopee, Minnesota. The company develops hardware and software for card and ID issuance, identity verification, authentication, certificate and key lifecycle management, and post-quantum cryptography. The business traces its roots to Datacard Corporation (founded in 1969) and Entrust Inc. (founded in 1994). Datacard acquired Entrust in 2013, and the combined company rebranded as Entrust in 2020.

GlobalSign is a certificate authority and a provider of internet identity and security products. As of January 2015, Globalsign was the 4th largest certificate authority in the world, according to Netcraft.