There is a new (and much much better) version available here.
See the Official Thread
MapView is a powerful visual Map editor created to make Map creation easier that has already been downloaded arround 10.000 times.
Placing Bonuses, Features, Rivers and Terrain is just one mouse-click efford and is by far faster then the Civ4 Built-In Worldbuilder.
Furthermore some map features can be examined in grafical statistics.
Open, edit and save *.Civ4WorldBuilderSave Files with MapView in seconds.
MapView 0.2.3.1072 2016-10-05