BridgePro

BridgePro is the most advanced, affordable contract rubber bridge computer card game on the market today.

It will realistically play bridge as if there were three other individuals sitting at the table. It is visually pleasing, simple to use, and reliable. Version 3.1.7 has many new menu features. Bidding and card play algorithms have been tweaked.
What's new in this version:
OS X 10.6+ compatibility.