Yep noisysockets is based originally off wireguard-go but is an attempt to simplify and make things a lot more idiomatic for library use. Filling in the gaps etc and improving the ergonomics. Hoping to build a bit of an ecosystem of supporting projects around it, eg. I'm currently working on a STUN server implementation based on the approach described in https://nordsecurity.com/blog/reaching-beyond-1gbps

One of the recent feature divergences from upstream is support for network exit nodes / gateways.