Get full protection for any domain, website or backend system in under 5 minutes by using ZeroSSL, the easiest way to issue free SSL certificates. Get new and existing SSL certificates approved within a matter of seconds using one-step email validation, server uploads or CNAME verification. Partnering with some of the biggest ACME providers, ZeroSSL allows you to manage and renew existing certificates without ever lifting a finger.
acme.sh treats them as a first class citizen.
Positions itself as an alternative to Let's Encrypt.
A free account gives you three (3) 90-day certificates at a time. A basic account ($12.50us per month or $120us per year) gives you an unlimited number of 90-day certificates as well as access to their REST API.
One interesting thing is that they say that you can get certs for internal services pretty easily because they offer multiple ways of validating ownership of a domain and identity:
ACME Server implementation (http-01 challenge). Builtin CA to sign/revoke certificates (can be replaced with an external CA), CA rollover is supported. Notification Mails (account created, certificate will expire soon, certificate is expired) with customizable templates. Web UI (certificate log) with customizable templates.
Tested with Certbot, Traefik, Caddy, uacme, and acme.sh.
The Dockerfile is remarkably understandable, which should make it easy to run it normally.
A simple zero-config tool to make locally trusted development certificates with any names you'd like. Does this by adding (and managing) a local CA on your laptop which you can issue arbitrary certs for (including localhost).
Lifewiki is /the/ wiki to visit if you're interested in Conway's Game of Life in particular, or cellular automata in general. You can get lost here for weeks, so take your time.