Qt based Veroboard, Perfboard, and PCB layout and routing application
IEC 60870-5-101 Source code Library Stack - Windows c, c++, c# .net
IEC 104 Source code Library for Linux c c++ posix arm
DNP3 Protocol Source code Library for Linux x86 x64 ARM PowerPC
DNP3 Source code Library for Windows and simulator
Cross-platform Open-source 2D CAD
Free Video Projector/Monitor Calibration Software
Inverse Compton emission from heliospheres of sun and stars
Electronic design and programming tools suite like Eagle, MpLab