dynamic-mvector alternatives and similar packages

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

• dynamic-state

  7.3 0.0 dynamic-mvector VS dynamic-state

  Library for serializable dynamic state keyed by type
  

• dynamic-object

  3.4 0.0 dynamic-mvector VS dynamic-object

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

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