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It is a system for the manipulation of symbolic and numerical expressions.

Free

View and manipulate biological sequences, and create plasmid vector graphics.

Free

River Analysis System (RAS) to perform water flow analysis and computations.

Free

high precision & powerful desktop calculator

Free

Draw electrical and electronic diagrams, schematics, and control circuits.

Here we have the best Math program, a language for technical computing.

Free

Simulate and run complete analysis of hydraulic systems.

Free

Cropwat calculates the amount of water needed for the irrigation of crop fields.

Free

Collection of physics simulations from University of Colorado.

Free

Designed to help users create virtual electromechanical systems

Free

Is a package for designing single-sided and double-sided printed circuit boards

An analog simulator, utilized for graphically analyzing any dynamic system.

Free

With this SDK, developers can embed World Wind tech in their own applications.

Create and destroy planets, solar systems, galaxies, or even galaxy clusters.

Free

Free cross-platform English thesaurus that works completely off-line.

Great software for building your family tree

It is a program that helps you discover and preserve your family’s heritage.

E-Notebook Ultra electronically organizes information

Free

It can be your first, last, and only line of offense against mathematics.

Matchcad offers mathematical solutions to challenges encountered by engineers

Free

Reference on physical constants...

Free

PAF is a genealogy program useful to help you store family history records.

A screensaver/program that displays the planet Earth revolving around the Sun.

Data analysis and visualization program.