Mac OS X Chess Ressources

It seems like all the cool chess programs and databases are developed for windows only. Is there really no Mac OS Chess Programs and Chess Databases available?

I have compiled a basic list of free Mac OS Chess Ressources:

Chess Database: Scid: A Free Chess Database App

Chess Engines:
Critter
Stockfish
Crafty ( port install crafty MacPorts )

Chess engines wikipedia.org

Chess Apps
xboard – X graphical user interface for chess (port install xboard, see MacPorts – requires X11)

Chess Games
The Week in Chess TWIC

Chess Server
FICS – free internet chess server