Science & Education

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.

Pilot the SpaceX Dragon 2 spacecraft and dock with the International Space Station.

Provides lightning and thunderstorm information in real-time on maps.

Simulates Cisco Systems' networking hardware and software.

Interactive world light pollution map.

Simulate the solar system, exoplanets and even colliding galaxies.

Discover hundreds of powerful, easy-to-use and awesome online tools — all in one collection.

It's a puzzle game for practicing and memorizing VIM commands.

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.