What are some alternatives?
When comparing ClickSSL and Let's Encrypt, you can also consider the following products
SSL2BUY - SSL2BUY is the foremost SSL certificate provider of online security solutions for businesses.
OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …
Digicert - Encryption & Authentication
FileVault - FileVault is a method of using encryption with volumes on Mac computers.
SafeCyberSSL - SafeCyberSSL is a platinum partner of leading Certificate Authorities.
Ensighten - Ensighten provides enterprise tag management solutions that enable businesses manage their websites more effectively.