regions alternatives and similar packages

Based on the "regions" category.
Alternatively, view regions alternatives based on common mentions on social networks and blogs.

• regions-monadstf

  3.5 0.0 regions VS regions-monadstf

  Monads-tf instances for the RegionT monad transformer

• regions-mtl

  3.5 0.0 regions VS regions-mtl

  mtl instances for the RegionT monad transformer

Do you think we are missing an alternative of regions or a related project?