Kalkulator 2.41     
Advanced Sci/Eng calculator, from simple expressions to differential equations

Looking Glass 1.0b2     
Looking Glass is a geometric optics construction set.

Gravitational Lensing 1.00     
software that draws images to see the effect of gravitational lensing

Stars and Galaxies in 3D 2.10     
Real stars and galaxies in 3D and full color, with known planetary systems.

Chemical Equation Expert 2.00     
A tool to balance and calculate equations.

Adastra Plus 1.02     
Complete astronomy with realtime sky, accurate reports, and live orbit-tracking