quiver (hackage): Quiver is a powerful stream processing library for combinatorial and monadic representation of computations over both inductive and coinductive data streams.  It is similar to Gabriel Gonzalez's pipes and Michael Snoyman's conduit, but generalises both with support for functor-based computations and a clean support for finite (i.e., inductive) data streams, both upstream and downstream of the computation being defined.
Keywords: bsd3|control|library