NumberDrop - A uniquely challenging math puzzle game.
Sum Fun - A fun number puzzle game for iPhone and iPad.
Math Search - See posts, photos and more on Facebook.
Griddition - Griddition is a challenging numbers puzzle where you must fill a grid with numbers, Sudoku-style.
HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
Simple Sudoku - Freeware Sudoku Puzzle Maker and Solver