Maxwell Render - Maxwell Render is rendering software for its quality and realism, and delivers great results via a simple set-up, which lets user focus on lighting.
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.
Insight Maker - Explore powerful simulation algorithms for System Dynamics and Agent Based Modeling in a truly...
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
Scicos - a graphical dynamical system modeler and simulator
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.