Viking is a free/open source program to manage GPS data
Precision Trigonometry: Advanced Calculator for Complex Math
A canvas library for generating technical drawings
Utility to show live progress, status & stats for running simulations
Analysis and display of Census, business, government attribute data
NeuralSyns is a neural simulator for large spiking networks.
Rechargeable battery capacity meter
Astronomical Image Solver with Telescope Pointing
Computer Vision Framework Library (for Linux)
PIC based weather station
Interface Web Microcontroller PIC
Met object database and interactive graphical editor
LCDSpicer2 is on their way