Science & Education

A 3D simulation of the Solar System and night sky in real-time.

A comprehensive set of tools for everyone interested in the observation of astronomical objects and events.

A professional high-frequency (3-30 MHz) propagation prediction software from NTIA/ITS.

It shows a realistic star map, just like what you see with the naked eye, binoculars or a telescope.

Find spelling and grammar errors, typos, and get suggestions on improving your copy.

Make your own graph paper.

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

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

A multilingual translation service provided by Microsoft.

Explore and play with a digital organism.