dynamic-state alternatives and similar packages

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

• dynamic-mvector

  4.8 0.0 dynamic-state VS dynamic-mvector

  A wrapper around MVector that enables push/pop/append functionality.
  

• dynamic-object

  3.7 0.0 dynamic-state VS dynamic-object

  object-oriented programming in Haskell, with duck typing and dynamic methods
  

Do you think we are missing an alternative of dynamic-state or a related project?