Civilization II: Call to Power Updater for Mac lies within Games, more precisely Strategy. This Mac app was originally developed by MacSoft.
From the developer:
Civilization II : Call to Power 1.2b Updater fixes the following: Fixed problem that caused a "NavigationLib not found" error. Fixed problem with arrow keys not scrolling the map. Fixed the "Could not restore AI" error that would sometimes occur while loading a saved game. This fix should also improve stability of large saved games. Music now plays correctly.
You may want to check out more software for Mac, such as Chaikin Power Tools, Real Ball II or Civilization V: Campaign Edition, which might be related to Civilization II: Call to Power Updater.