Optics library for Scala
Quasar Analytics is a general-purpose compiler for translating data processing and analytics over semi-structured data into efficient plans that run 100% in the target infrastructure.
Generalized recursion schemes and traversals for Scala.
A schema registry system
Interoperability libraries for Shapeless
A purely functional Scala client for CouchDB
Interoperability libraries & additional data structures and instances for Scalaz
Bucketing and partitioning system for Parquet
Yet another Scala json parsing library blending together the better ideas
Typesafe CSV parsing