Oil companies and other stakeholders may need to assess the value of new fields or prospects even when very little hard data exists. Based on a simple model of a field development solution, this tool calculates a cash flow profile and a risked NPV key performance indicator. Run in your web browser or download.

• License: Freeware
• Language: English
• Release: 2005-09-22
• Size: 28 Mb
• Cost: Free

Spring modeling application allow moving bob and changing any params

• License: Freeware
• Language: English
• Release: 2005-12-28
• Size: 48 Kb
• Cost: Free

Atomsmith is an easy-to-use, Windows-based program for exploring models of molecules. Scientists and high school and college-level students and teachers use Atomsmith to study the 3D structure and behavior of molecules.

• License: Commercial
• Language: English
• Release: 2003-12-17
• Size: 0 B
• Cost: 99.00 $

CAMCTO is a rapid application development tool for engineering. It allows to create standalone modeling applications in minutes. Customized executable and HTML Help files are created. Used originally for air engines modeling, it proved to be universal tool, which can be used for virtually anything. System requirements include Borland Delphi 7.0 command-line compiler.

• License: Shareware
• Language: English, Russian
• Release: 2007-01-14
• Size: 6 Mb
• Cost: 650.00 $

Modeling and simulation tool for automatic control systems in the time and frequency domain based on the idea of block diagrams. Full visual block diagram editor. Simulation results are displayed in diagrams and data tables. Has more than 90 basic function blocks. Users can design custom blocks and store them in the programs palette or in libraries. Parameter variation lets compare systems responses with varying parameter values.

• License: Shareware
• Language: English, French, German
• Release: 2006-11-08
• Size: 7 Mb
• Cost: 160.00 $

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 (AD) 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.

• License: Freeware
• Language: English
• Release: 2006-12-07
• Size: 2 Mb
• Cost: Free

Creates agent-based financial market simulation models for trading stocks, ETFs or other securities. A multitude of trading strategies compete on a virtual market that runs parallel to the real world market. Strategies evolve through 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.

• License: Shareware
• Language: English
• Release: 2007-02-28
• Size: 781 Kb
• Cost: Free

Do you need to design, visualize or document your database? ModelRight 3 can reverse engineer your existing database to get a graphical view of it, generate all the SQL statements to create the database, or synchronize your database model with the database to keep your design up to date.

• License: Freeware
• Language: English
• Release: 2008-03-04
• Size: 26 Mb
• Cost: Free

Do you need to design, visualize or document your database? ModelRight 3 can reverse engineer your existing database to get a graphical view of it, generate all the SQL statements to create the database, or synchronize your database model with the database to keep your design up to date.

• License: Shareware
• Language: English
• Release: 2008-03-04
• Size: 27 Mb
• Cost: 895.00 $

QuickUML is a software design tool that tightly integrates a core set of UML models with code generation for several languages. An entire project is presented through a tabbed window that includes use cases, class models, object models, dictionary and code and saved as an XML file.

• License: Demo
• Language: English
• Release: 2006-10-03
• Size: 7 Mb
• Cost: 295.00 $

If you have read about explicit, geometry-based 3D CAD, you know it is the best approach for creating flexible, lightweight designs. Now, PTC brings you a free download from the CoCreate product family - CoCreate Modeling Personal Edition, a 3D CAD system you can use for assemblies with up to 60 parts. Download a FREE version of CoCreate Modeling Personal Edition today and see how liberating an explicit, geometry-based 3D CAD system can be.

• License: Freeware
• Language: Chinese, ChineseTraditional, German, English, Italian, Japanese, Korean, Russian, Czech, Turkish
• Release: 2008-03-31
• Size: 100 Mb
• Cost: Free

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.

• License: Freeware
• Language: English
• Release: 2006-12-08
• Size: 0 B
• Cost: Free

Altova UModel 2006 is the starting point for successful software development. Visually design application models and generate Java or C# code, or reverse engineer existing programs into UML2 diagrams, then fine tune your designs and complete the round trip by regenerating code. UModel takes the mystery out of UML, making visual software design practical for programmers and project managers. It is the simple, cost-effective way to draw on UML.

• License: Demo
• Language: English
• Release: 2006-07-18
• Size: 12 Mb
• Cost: 129.00 $

DTM Data Modeler is a CASE tool for database developers that supports both forward and reverse engineering. It is an easy-to-use tool allowing you to work both with logical and physical data models in the form of an entity-relationship diagram. The product is intended for database architects and developers and works with data sources via the ODBC interface, which means compatibility with all modern DBMS.

• License: Demo
• Language: English
• Release: 2006-05-19
• Size: 1 Mb
• Cost: 179.00 $

In Pontifex you design and build bridges. Once your bridge design is completed the bridge is tested by trains traveling across it. As you watch, the vehicles will either pass over safely or plummets into the river below depending on your design. Pontifex uses complex physics which allows for many different types of bridges to be built and tested.

• License: Demo
• Language: English
• Release: 2001-10-19
• Size: 942 Kb
• Cost: 19.95 $

Bridge Construction Set is all about building a bridge that doesn't break, although watching your bridge creation break and plunge a train into the watery depths below can be half the fun. In the Bridge Construction Set you design and build bridges and then stress test them to see how your creations hold up under pressure.

• License: Demo
• Language: English
• Release: 2003-08-26
• Size: 3 Mb
• Cost: 19.95 $

Software for exploring five cellular automata: q-state Life (a generalization of Conway's Game of Life), the Belousov-Zhabotinsky Reaction, Togetherness, Viral Replication and Diffusion-Limited Aggregation. The documentation provides a complete description of the algorithms used.

• License: Shareware
• Language: English
• Release: 2007-10-23
• Size: 1 Mb
• Cost: 17.50 $

queue simulation free software for education.

• License: Freeware
• Language: English
• Release: 2004-02-04
• Size: 42 Kb
• Cost: Free

Do you need to design, visualize or document your database? ModelRight 3 for MySQL can reverse engineer your existing database to get a graphical view of it, generate all the SQL statements to create the database, or synchronize your database model with MySQL database to keep your design up to date.

• License: Shareware
• Language: English
• Release: 2008-03-30
• Size: 26 Mb
• Cost: 295.00 $

Blueprint Software Modeler FREE Community Edition. A complete free UML2.1 compliant modeling tool, providing non-commercial users access to State of the Art modeling software. The Community Edition supports the most important diagrams: Use Case Diagram, Class Diagram, Activity, Diagram, State Machine Diagram, Component Diagram, Package Diagram. Additional diagrams will be included shortly, starting with the Sequence Diagram.

• License: Freeware
• Language: English
• Release: 2006-10-21
• Size: 84 Mb
• Cost: Free