ComodoSSLstore is described as 'ComodoSSLStore is one of the largest global SSL certificate providers. As a platinum partner for COMODO, they buy SSL certificates in large quantities and pass the savings to you' and is a certificate authority in the security & privacy category. There are more than 10 alternatives to ComodoSSLstore, not only websites but also apps for a variety of platforms, including Mac, Windows, Chrome OS and Self-Hosted apps. The best ComodoSSLstore alternative is Let's Encrypt, which is both free and Open Source. Other great sites and apps similar to ComodoSSLstore are Verisign, Buypass, CAcert and COMODO SSL.