Play Solitaire is a small independent project. It puts the card games people used to play on the office computer into the browser, so you can start a game without downloading anything, installing an app or making an account.
Every deal has a number, so you can send a friend the exact game you just played. There are hints and unlimited undo, and once a game is decided a button plays out the rest. The rules follow the standard versions of each game, written down in full on the rules page.
Your statistics stay in your browser. Games are counted anonymously, only to show how many are dealt and won each day; the privacy page lists exactly what is stored and for how long.
If you find a bug or a deal that looks wrong, or there is a game you would like to see, use the contact form. It goes to the person who builds the site, who reads every message.