I've got the brains You've got the looks Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. It is a service provided by the Internet Security Research Group (ISRG).
@revenant Let's Encrypt is good. My only concern with it is that it's a single point of failure. If it were to go away for any reason then hosting multiple clearnet sites could become a lot more expensive.