Yggdrasil is written in Go. All of our source code is available on GitHub. The codebase is fairly small and easy to navigate.
If you’d like to talk to us about the project or the source code, please join our Matrix channel.
Yggdrasil has been tested on a number of platforms (including Linux, Windows, macOS, FreeBSD, OpenBSD and Ubiquiti EdgeRouter). There are also packages available for a number of distributions/platforms.