compiler

either

the EitherT monad transformer

linear-haskell

linear haskell playground

indexed

Indexed Functors for GHC 7.6

update

(Co)update (co)monads and right monoid actions

intern

Hash consing for arbitrary Haskell data types

exceptions

mtl friendly exceptions

logict

A backtracking logic-programming monad.

abelian

Commutative Applicatives and Semigroups

revisions

A monad for spark-based deterministic concurrent revision control

grid

distributed heterogeneous computation

reactor

task parallel reactive programming in haskell

category-extras

category-theoretic goodness for Haskell

ekmett.github.com

haddocks

suspension

ispc

a small stub for compiling and linking ispc code with haskell