Churchill Solitaire - The most diabolical version of solitaire ever devised. Played by Sir Winston himself. Available via the AppStore and Google.
PySolFC - PySolFC is a collection of more than 1000 solitaire card games. It is a fork of PySol Solitaire.
Microsoft Solitaire Collection - Play Klondike, Spider, Freecell, Pyramid, and TriPeaks! Plus, Daily Challenges!
Solitaire Planet - Enjoy a whole world of solitaire games in an elegant and configurable 3D view.
Treys - Like solitaire... but fun!
AisleRiot - Aisleriot (also known as Solitaire or sol) is a collection of card games which are easy to play...