CircuitLogix - CircuitLogix electronics lab simulation provides fast, powerful schematic design and simulation in one complete program.
AnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.
EasyEDA - EasyEDA - Web-based EDA suite; runs in browser.
FlexSim - Simulation software to model, simulate, predict, and visualize systems in manufacturing, material handling, healthcare, warehousing, mining, etc.
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.
Simio - Facility design simulation & production scheduling