Pretty Good Solitaire is the oldest major continuously updated solitaire card game collection for Windows.
Pretty Good Solitaire version 1.0 was released July 19, 1995. The first version featured 5 games: FreeCell, Baker's Dozen, Golf, Fourteen Out, and Yukon. Although the game has grown tremendously since, the very first version had several features that you will find in the latest version today:
Full undo back to the beginning of the game.
Automatic game saving - exit a game and come back to exactly where you were.