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.