Python program for Geiger counters and Environmental Sensors
... the open-source glide computer
Graphical explorer for BACnet and Free BACnet library in C#
IEC 101 Server and Client Simulator Source code Library, Win, Linux
DNP3 Protocol Source code Library Outstation and client Win Linux
DNP3 Outstation and client simulator, Source code Library, win, Linux
Precision Trigonometry: Advanced Calculator for Complex Math
A build-it-yourself, 6-wheel rover based on the rovers on Mars
Automated astrophotography using mobile devices
FAA digital chart viewer for iPhone and iPad