Java Sudoku is a cross platform version of the popular Sudoku logic game. Java Sudoku features an advanced user interface that is both easy to use and appealing to the eye. It allows you to generate completely random Sudoku puzzles, enter your own puzzles from newspapers and magazines, or load them from Sudoku XML files. It can also be used as a Sudoku generator and solver.
Ascal is a Gnome version of the board game Lasca (or Laska). Lasca is a game similar to Draughts, but with some enhancements. You can refer to the description in the help system of Ascal, or on Wikipedia. Ascal is for one or two players. You can undo moves, save and load games, etc.
sudoku.pl that offers a simple alphanumeric board display that supports the 9x9 matrix. It can generate a sudoku puzzle, but manual input by the user is also possible to use a sudoku from a newspaper, the Internet etc. It assists the user in solving the sudoku by providing some functions, up to and including solving the sudoku from the current board-setting. If the option -d is set, all solutions are found and logged, up to a maximum of 10. This option enables the program to test a given sudoku for having one solution only, which is a generally preferred sudoku property. Also included is a sudoku generator that supplies the single solution type sudokus.