FrAid (Fr[actal] Aid) is a programming language that is appropriate for mathematical computations, visualization, batch processing, and more. It features both a standalone application that provides a programming environment for the language and a system for integrating the language with Java. The Java interface allows mathematical equations and formulas to be used with Java code, making it easier to process numerical computations, symbolic computations, imaging, CAD, and more.
bingo-cards is a program to create number, word/letter, and picture bingo cards. These cards can be used for entertainment in the car, in a classroom (for example, to teach the element symbols for the Periodic Table), or just with your kids. You could also create bingo cards with little pictures of everyday objects, then call the names out in Spanish, French, Italian, or German (or whatever you fancy).