Yes. Certbot, formerly known as the Let’s Encrypt ACME client can help you add a certificate to your site in a few minutes. Certbot is an Automatic Certificate Management Environment (ACME) client and became available in public beta on May 12, 2016. Once you install Certbot on your server via SSH, you can then call on its commands to install and authorize SSL certificates.
Certbot is an EFFs client for Lets Encrypt that automatically configure HTTPS encryption on your server. Certbot is currently in public beta and the official release - Certbot 1.0 is expected to release later this year.
Yes. Lets Encrypt is a FREE SSL Certificate authority that can provide SSL certificates for your domains. They are the only free, open and automated certificate authority that is run for the public benefit (at the moment). Lets Encrypt gives websites digital certificates to enable HTTPS (SSL/TLS) for free.
They are sponsored by Firefox, Facebook, Shopify and a number of leading internet companies. Click here to learn more about Lets Encrypt and how it works.