Allgood Solitaire for Mac

From Allgood Software:

Allgood Solitaire offers 65 different variations, from the familiar Klondike, to more obscure games like Will O the Wisp, and Pyramid. You'll be able to learn new games quicker in the new version, as it is easy to display the characteristics of each pile, the piletype and what card(s) are necessary to build on it. Not only that, you can examine the contents of any pile at any time, or turn over the aces,wherever they are hidden. If you forget how a certain game is played, it's easy to bring up the rules summary for the current game.