A sudoku implementation. It generates and solves sudoku games. It stores sudoku quests in a database. Currently it has a print view only. In future it gets a GWT-based GUI.
Enjoy doing the crossword in the morning? But your paper doesn't print one on Sundays! Why not store the old crosswords in your computer so you can replay them anytime. Crosswordsaver keeps them in a database, you can play them later from your browser.