DebtPayoff is an application which will calculate how long it will take to pay
off a credit card at a given interest rate and payment amount. It will also
calculate how much of what is paid will go toward interest.
JColorGrid is an application for graphical data
exploration and the rendering of colorgrids, a
generalization of the popular heat-map
representation. The software exists as a
command-line application, a graphical viewer, and
an API for development.
A LETS is a Local Exchange and Trade System, the
purpose of which is to build a community by
providing interest-free currency and banking.
WebLETS is a platform-independent (PHP and
PostgreSQL-based) implementation of a LETS with a
Web browser user interface.