I haven't seen any good Scala libraries for NBT, so i wrote my own.
It uses ALOT of Scala syntatic features to generate and parse NBT data, like scala.Dynamic trait, implicit conversions, syntax sugar etc.
It defines a whole new small DSL language (insinde of Scala) to generate NBT, it looks almost like JSON right in your code.
Also it is really lightweight(as any other NBT library), well-documented and simple.
More info and downloads can be found on it's GitHub page.
It is licenced under LGPLv3, so you can use it freely.
Hello! Your github repo is not available. Where can I get your library?