Mostly been working on tier6 [0], which is "like" zerotier but over the sanctum protocol and fully open source (ISC licensed).
Getting ready to release a 1.0.0 of sanctum [1], after almost a year of internal testing, dogfooding and talking about it at security conferences.
We've also setup conclave [2] as an official release site for the projects tied to sanctum such as tier6, or the library implementation of the protocol etc.
Working on cross-flock discovery in sanctum [1] so I can cut a 1.0 release hopefully before Christmas.
I am always looking for more people to test and play with it or even review the code. We've got a nice little user community going.
Usually this comments drowns in the crowd of the massive amount of awesome stuff people are building, but if you find sanctum useful, hit me up. Good things are happening.
Look into sanctum [1] it's cathedral mode. You can self-host those entirely and they're only discovery nodes. Once the tunnel is up the cathedral isn't involved unless for black key distribution or if your peers are behind restrictive NAT.
There's reliquary [2] which I host and run for me and my hacker friends based on sanctum.