Science & Education

Explore the universe, take guided tours of the sky by astronomers and educators from famous observatories ...

Analyze your text, find common spelling errors and grammatical mistakes and provide information about errors.

A program for quickly estimating the environmental consequences of a comet or asteroid impact on Earth.

A free online dictionary, which provided by Russian software company ABBYY.

It provides automated translation to and from the major European languages.

Convert between decimal and binary numbers.

Run desktop applications on nearly any device with a modern web browser.

Allows users to convert temperature, volume, distance, digital information, weight, area, speed and time.

Interactive Web 2.0 periodic table with dynamic layouts showing names, electrons, oxidation, isotopes, search.

Analyze your text, find common spelling errors and grammatical mistakes and provide information about errors.