Hello I've been using cloudflare to get remote access for the couple apps I selfhost, but lately I've been hearing about the wonders of tailscale.
It seems that the free tier is enough for my use. Which would be a safe option to have remote access for my 3D printer? Also how are both in terms of privacy?
You can selfhosted tailscale so that they don't have any access. You can't with cloudflare tunnels as far as I know. Tailscale's client is open source, so is their Headscale server which originally was developed by a 3rd party. You can look into the code for that. Not sure what you'd want me to say. If you really want to be informed I'd inspect the code yourself
I'm self hosting cloudflared right now, the TLS from cloudflare terminates in a container in my network and then goes to my reverse proxy container for my local network. I'm definitely going to poke around tailscale and their funnels for the future, I'm just playing devils advocate for those replying not knowing anything about cloudflare tunnels yet saying they're the wrong choice.
Cloudflare tunnels definitely aren't wrong, you're just not entirely using open source software. It's a very good option if you need to open things to the public or want to learn more about cloud services