PySolFC - PySolFC is a collection of more than 1000 solitaire card games. It is a fork of PySol Solitaire.
HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
Solitaire Planet - Enjoy a whole world of solitaire games in an elegant and configurable 3D view.
Simple Sudoku - Freeware Sudoku Puzzle Maker and Solver
123 Free Solitaire - High-quality solitaire collection including Spider solitaire, FreeCell, Klondike and more.
nsudoku - A Sudoku game made with ncurses.