A math flashcard-like game
Guma: An application for elementary school math...
Elementary Arithmetic Word Problem Solver
A simulation software for numerical techniques.
Mathematical Parser for Java
I believe it is the best tool for everone get it it's free.
Repository has been moved to: http://dtitov.github.com/bracer
A plugin for JabRef
A fair attempt at the Keplerian tradition to explore the solar system