Netbird's great. I've been using Pangolin (https://pangolin.net/) lately for my homelab. It's very similar in functionality to Netbird, but I like the UX of it better.
Also a very good alternative. I went on a spree and tried out all of the self hostable alternatives and this was definitely a runner up to netbird. The self hosted tailscale is also good, just not as polished as these two projects are.
Switched from Pangolin to Netbird recently and enjoy Netbird more!