Do a complete energy audit of your business with this easy to learn and use program. Evaluate effective energy saving projects like changing roof or wall color, attic ventilation, and window shades. The program does peak and annual loads. The program is written by a national authority on energy conservation. A free abridged edition of

SIAMS S3D is a three-dimensional virtual constructor, which main task is to compose structures. SIAMS S3D composes structures from 3D geometrical objects: dots, lines, planes, spheres, tetrahedrons, polyhedrons and their mixtures. SIAMS S3D was designed first as a scientific oriented program. It was intended to reproduce structure of gr

AIDA is a freeware diabetes software simulator / modeling program of blood glucose-insulin action

Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Input mass, radius, coordinates and velocity components of 2 to 10 bodies manually or by dragging and dropping predefined bodies. Then watch how the orbits evolve under the mutual gravitaional attractions. Save and print the

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StarStrider is a fully three-dimensional planetarium and 'software star ship'. You can visit not only the planets and moons our solar system, but also hundreds of thousands of other stars. And you can view spectacular galaxies, cluster, nebulae! Relativistic space-time effects such as aberration and Doppler shift are optio