KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Petrel E&P Software Platform - The Petrel E&P software platform enables discipline experts to work together to make the best possible decisions throughout the asset lifecycle.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Surfer - Surf News, Fantasy Surfer, Photos, Video and Forecasting.
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.
Aspen HYSYS - Aspen HYSYS is a software solution for chemical process simulation and modeling.