Glome is a ray tracer written by Jim Snow. Originally it was written in Ocaml, but the more recent versions are written in Haskell.
GlomeVec is the vector library used by Glome, and is now (as of Oct 25 2009) available as a separate library. My intention is to make the core of Glome into a library as well.
GlomeVec is also used by a separate project, IcoGrid