I’ve been using Tailscale because I like the business model they’ve been pushing. They’ve also followed through with that, expanding what the free tier of their service offers instead of restricting it more.
Although possibly biased, Tailscale has a write up comparing the two and the conclusion is that both are good at accomplishing their goals. If you have a technology or business preference, it could mostly come down to that. https://tailscale.com/compare/zerotier/
Also a big fan of Tailscale. Works well out of the box and they have great documentation.
I’ll also throw out its nice to see many of their articles comparing services don’t end with a simple “We’re better!” but a “pick whats best for your use case.” Makes them look a lot better imo.
I’ve been using secret option 3- netbird. Kernel wireguard support, completely self hostable, and very active development.
I just use wireguard that’s built in to opnsense. Am I missing out on something ?