Juicessh? One time payment, unfortunately not open source but can deal with a lot of services, you can use ssh key and I don’t know what else you’d need but you can take a look (and test it for free since the payment is only to unlock features you might not need)
You are going to need a domain name and a reverse proxy. But to be honest of you are asking that kind of question means you should not make your instance public and advertise it to the world just yet.
Learn how to secure your infrastructure and how everything is working together first.
Then you can check out what a reverse proxy is and what it is used for.
Only then you can open your instance to the public with whatever services you’d like. But remember, opening it to the outside without any security knowledge is asking for trouble
Oh I never knew either!
Not that you mention it it is true that I have not seen it update in a long time. Since I’m only using it from time to time and locally (mainly) I’ve never bothered to check.
What are you using instead?