Modeling

SDE for JBuilder (CE) for Mac OS X
Free - Visual Paradigm International Ltd.

SDE for JBuilder is a full-featured UML modeling tool seamlessly integrated with JBuilder. SDE-JB supports the full software development life-cycle - analysis, design, implementation, testing and deployment. You can capture requirements, draw UML diagrams, reverse engineer Java to UML model, generate Java, control versions, etc. New features include Mind Mapping Diagram, Callout and Freehand shape, Nicknamer,Perforce Integration, etc.

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20sim Viewer
Free - Controllab Products BV

20-sim is an advanced modeling and simulation package for Windows. With 20-sim you can simulate the behavior of dynamic systems, such as electrical, mechanical and hydraulic systems or any combination of these. 20-sim models may use iconic diagrams, bond graphs, block diagrams as well as differential equations. Used in mechatronics, control engineering, robotics, mechanical engineering, hydraulics etc. From the same lab as Tutsim.

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FC-Win
Free - Optimal Designs Enterprise

FC-Win (tm) is a front-end program for Fortran Calculus (tm). The Fortran Calculus (FC) language is for math modeling, simulation, and optimization. FC is based on Automatic Differentiation that simplifies computer code to an absolute minimum; i.e., a mathematical model, constraints, and the objective (function) definition. Minimizing the amount of code allows the user to concentrate on the science or engineering problem at hand. 60+ examples.

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Adaptive Modeler
Free - Altreva

Creates agent-based financial market simulation models for price forecasting of stocks, ETFs or other securities. A population of trading strategies compete on a virtual market that runs parallel to a real world market. Strategies evolve by genetic programming and market pricing dynamics, driving the population to recognize and anticipate recurring price patterns. The collective behavior of the virtual market is used to generate trading signals.

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Heat Transfer
Free - Optimal Designs Enterprise

Solves Heat Transfer BVP, IVP, IP problems. Source code + Output files are included. Calculus (level) Programming makes solving partial differential equations, ordinary differential equations and algebraic equations simple. You state the equations, initial conditions, & parameter values and leave the solving method to the compiler. Equations maybe nonLinear, implicit, any order, any degree and/or constrained.

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CurvFit
Free - Optimal Designs Enterprise

CurvFit (tm) is a curve fitting program 4 Windows. Lorentzian, Sine, Exponential & Power series are available models to match your data. A Lorentzian series is highly recommended for real data especially for multiple peaked/valleys data. CurvFit is another improved productivity example do to using Calculus (level) programming ... ie. minutes to solve, days or years to understand solution & what it implies (e.g. wrong model, sampling rate error).

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