slackbuilds_ponce/system/letsencrypt
..
letsencrypt.info
letsencrypt.SlackBuild
README
README.Slackware
slack-desc

The Let's Encrypt Client is a tool to automatically receive and
install X.509 certificates to enable TLS on servers.
The client will interoperate with the Let's Encrypt CA which will be
issuing browser-trusted certificates for free.

See README.Slackware for more detailed instructions.