David Caldwell's Realm
I've also been spending a lot of time writing solitaire games. Here's some links to games you can play right in your browser (or on your phone): Freecell Solitaire, Klondike Solitaire, Flower Garden Solitaire, Spider Solitaire, Sea Haven Towers Solitaire.
Sorry for mailing this article, I've obviously made a typo (168!=186) that's the price for being up all night and doing some "quick" checks before you go to bed .... -- Herbert Rosmanith
If you feel so inclined, you may browse my CD collection...