PhET Interactive Simulations
Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.
Decibel X is one of very few noise meter apps with highly reliable, pre-calibrated measurements and supports dB468, dBA, dBC. It turns your mobile device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you.
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OpenSesame
OpenSesame is a graphical, open-source experiment builder for the social sciences. It sports a modern and intuitive user interface that allows you to build complex experiments with a minimum of effort. With OpenSesame you can create a wide range of experiments: Psychophysics...
Membean Answer Hack
Eliminate English class stress by using the all new Membean Hack. Never worry about having to solve a bunch of vocab answers ever again.
WikiLinks
WikiLinks provides a fun and engaging experience of Wikipedia content through a brilliantly designed, mind-mapping interface. Browse articles with full video content and see linked articles in a navigable mind-map, tapping and holding for a quick preview.
RTranslator
Open source real-time translation app for Android that runs locally.
Mapiful
Did you ever wish for a printed map poster of your hometown or a place where you fell in love? Well, if that place isn’t Paris, London or New York chances are you've ended up empty handed.
Metapedia
Metapedia is an electronic encyclopedia which focuses on culture, art, science, philosophy and politics.
EteRNA
Eterna is a citizen science game where players learn to design RNA molecules for medical research by solving puzzles. Complete these puzzles to unlock lab access and participate in challenges where you can invent medicine!.