EMSO simulator - EMSO simulator is an equation-oriented process simulator with a graphical interface for modeling...
Altair Activate - Altair Activate is an open & flexible tool for rapidly modeling and simulating products as multi-disciplinary systems in the form of 1D models (expressed as signal-based or physical block diagrams), optionally coupled to 3D models.
Insight Maker - Explore powerful simulation algorithms for System Dynamics and Agent Based Modeling in a truly...
GNU Radio - GNU Radio is a free & open-source software development toolkit that provides signal processing blocks to implement software radios.
Minsky - System dynamics program with additional features for economics
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.