Education

A simple to use online function plotter with a lot of options for calculating and drawing graphs or charts of mathematical functions and their score tables.

The most sophisticated and comprehensive graphing calculator online. Includes all the functions and options you might need. Easy to use and 100% Free!

Online Graph draw: plot function, plot parametric curves,plot polar curves.

An interactive 3D visualization of the stellar neighborhood, including over 100,000 nearby stars. Created for the Google Chrome web browser.

Visualize the orbits and the relative positions of the Solar System objects in an interactive 3D Solar System Simulator.

A world generator, and human history simulator

Free planetarium program for windows

This simulator will familiarize you with the controls of the actual interface used by NASA Astronauts to manually pilot the SpaceX Dragon 2 vehicle to the International Space Station.

See the Solar System in your browser with jsOrrery, a Javascript / WebGL orbital mechanics simulator.

Orbiter is a realistic 3D real-time space flight simulator program. Official site with free download.

Online 3D simulation of the Solar System and night sky in real time - the Sun, planets, dwarf planets, comets, stars and constellations

TheSkyLive.com provides detailed information, precise position and sky charts for the most import Solar System and Deep Sky objects

The largest pronunciation dictionary in the world. All the words in all the languages pronounced by native speakers

HowToPronounce.com is a crowdsourced audio pronunciation website that helps you learn how to say words, names and phrases contributed by native speakers.

American and British spellings, with alternative pronunciations. Sounds are fast, clear and completely natural, pre-recorded by native speakers.

The Web's largest and most authoritative acronyms and abbreviations resource.

Acronym Finder is the largest and most trusted database of over 4 million acronyms and abbreviations. What does an abbreviation stands for? The answer is here

Most popular dictionary of acronyms and abbreviations. All Acronyms helps to find acronym or abbreviation meaning as well as best ways to abbreviate any word.

Type in your language wherever you may be with the best online keyboard on the Internet. In addition, make use of related tools such as image to text converter, Unicode table, Unicode converter, ASCII converter, and braille translator.

Ortografía, sinónimos, conjugación y otros recursos del español.

Lexico is a collaboration with Oxford Dictionary hosted by Dictionary.com offering definitions, meanings, and grammar in both English and Spanish. Translate from English to Spanish and Spanish to English with Lexico.com

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