Currently using Tailscale but looking to switch due to it's reliance on a centralised proprietary control node. From what I understand NetBird is a true mesh VPN with no central node reliance? Eager to try this once a mobile app is available.
FYI: Network still be working in case the management service is down.
See architecture overview: https://netbird.io/docs/overview/architecture
Every component can be self-hosted.