DWSIM - DWSIM is an open-source CAPE-OPEN compliant chemical process simulator for Windows and Linux.
Pspice - OrCAD PSpice technology provides the best, high-performance circuit simulation to analyze and refine your circuits, components, and parameters before committing to layout and fabrication
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.
CHEMCAD - We equip chemical engineers with integrated and intuitive process simulation software to tackle projects large and small. Discover how CHEMCAD can help you design, analyze and measure simple and complex processes like never before.
PCBWeb - PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics...