WinStars is a program that, with the help of the latest 3D technologies, will help to make a very realistic and exciting tour of our solar system. With WinStars you can determine the current location of the automatic probes Voyager 1
GeoGebra is a graphing calculator for functions, geometry and statistics. Geometry, algebra, table construction, statistical and arithmetic operations are combined here. It is possible to use equations, plotting graphs in 2D and 3D modes, etc.
Kurso de Esperanto is a multimedia program for self-learning Esperanto. This one-of-a-kind language, and also a way of verbal communication between multinational nations is a kind of "shortcut" in mutual communication. It is true that this language has gone virtually to nothing, but its supporters treating it even as a curiosity or hobby, to this day there is no shortage all over the world.
AstroGrav is a tool that allows you to precisely simulate the behavior of planets in the solar system. He deals with the calculation of gravitational interactions that occur between all bodies in space.
MathType is a great application for working with formulas, mathematical expressions and symbols in text documents. Supports work with Microsoft Office, MATLAB, Gmail, Google Docs, OpenOffice, etc. There is a built-in equation editor.