20-sim is a modeling and simulation software that runs under Microsoft Windows. With 20-sim you can model and simulate the behavior of dynamic systems, such as electrical, mechanical and hydraulic systems or any combination of these. This advanced modeling package simulates electrical, mechanical, thermal or hydraulic systems. Use the graphical editor and the large library of standard sub-models to create your own model with iconic diagrams, bond graphs, block diagrams and differential equations. Then simulate it and perform all kind of analysis tasks with the supplied toolboxes.
20-sim fully supports graphical modeling and allows you to design and analyze dynamic systems in a intuitive and user friendly way. 20-sim supports the use of components. This helps you to enter models as in an engineering scheme: by choosing components from the library and connecting them, your engineering scheme is actually built without entering a single line of math!

The license of this software is Free Trial Software, the price is $700.00, you can free download and get a free trial.