Calm

A really cool site that teaches you how to meditate:

https://www.calm.com/

Plato Productivity Timer

You’ve probably heard of the Pomodoro technique (work for 20 mins, take a break for 15, start all over again), which is proven to help most people get more done. This simple timer configures all of that for you and lets you customize your breaks:

http://platotimer.com

The Theory of Everything – Mapped

This map visually walks you through complex physics theories and shows how they’re related – really cool:

https://www.quantamagazine.org/20150803-physics-theories-map/

Old Maps Online

This site is amazing – view a massive selection of ancient maps in high-res:

http://www.oldmapsonline.org

Google Feud

A cool Family Feud game based on Google Autocomplete searches.

http://www.googlefeud.com

Gravity Simulator

A really cool Newtonian gravity simulator:

http://hermann.is/gravity

Spreeder

Learn to speed read online for free:

http://www.spreeder.com

Habitica

A site that turns your life into an RPG and uses character progression to help motivate you to get real-world stuff done:

https://habitica.com/static/front

Smarty Pins

A trivia game that uses Google Maps to test your geography skill

https://smartypins.withgoogle.com

What should I read next?

Stuck without a book? This site takes your favorite books and uses them to recommend new reading ideas.

http://www.whatshouldireadnext.com/

MIT Video

MIT offers free online video courses to anyone interested:

http://video.mit.edu/

Ted-ED

Free online educational resources from the people behind TED Talks:

http://ed.ted.com/

Unroll.Me

Automatically unsubscribes you from pesky email newsletters:

http://unroll.me

Cold Turkey

Trying to stay off Imgur so you can study? ColdTurkey blocks sites for you while you work, to keep you focused:

https://getcoldturkey.com/

Todoist

A simple little to-do list app that helps you keep track of what you need to get done:

https://todoist.com/