Science & Education

Design, simulate, share, and discover electronic circuits.

See lightning strikes in real time across the planet.

Satellite predictions and other astronomical data customised for your location.

A large, easy-to-use, and convenient online calculator for everyday use.

Track satellites in real-time on an interactive 3D map.

Paste your text or start typing below to check grammatical errors and spelling mistakes across languages.

Learn how to perform attacks that real hackers use, and see how they work in our simulator.

Provides online, in-browser tools for schematic capture and circuit simulation.

Explore official, up-to-date information on investigations by NASA's Hubble and James Webb space telescopes.

Visualization and analysis of marine traffic and vessel-based human activity at sea.

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

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

Convert between decimal and binary numbers.

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

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

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

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

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

Instantly translate text and web pages between many languages.

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