MangoPenguin

This can be done entirely client side with a PGP addon for your mail client or browser.

Immich, but it needs the server side running somewhere.

Simple Mobile Tools apps were sold to a different company!

Fossify apps are the replacement.

Its not a local connection if you're getting this message. You might be in the same network, but for some reason it's not connecting directly.

Are you talking about the 24 bit 192kHz part?

Wouldn't that already be illegal under current laws?

Most programs on github will have a release you can just download and run, if you click on the releases section you should see some files for each version.

Oh gotcha yes it does. Are you on CGNAT with your ISP so you can't forward ports?

Why does it need to be on a VPS? It seems to work on a home network when I played around with it.

Wireguard if you're just using it yourself. Many various ways to manage it, and it's built in to most routers already.

Otherwise Headscale with one of the webUIs would be the closest replacement.

There are some community webUIs for Headscale, headplane in particular looks pretty good: https://headscale.net/stable/ref/integration/web-ui/

I'm not sure otherwise how different the experience would be.

At least it's honest. I really dislike when linux is presented as a drop in replacement for windows where everything will just work how you're used to, because it does require re-learning new software and workflows.