OpenStax

What it does

OpenStax offers free college textbooks for all types of students, making education accessible & affordable for everyone. Browse our list of available subjects!

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  FreeTexbooks2014 · ▲6

  on-campus marketplace for students to buy and sell textbooks

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  reSRC2014 · cakhiatvttbdg.tv · ▲53

  Free programming learning resources incl. 500 free books

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  Khan Academy for iPad2015 · apps.apple.com · ▲102

  Learn math, biology, chemistry, economics, & more for free

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  CODY2014 · codyhouse.co · ▲136

  Free library of HTML, CSS, & JS nuggets

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  Doxearch2016 · ▲12

  Free PDF Search to find all documents available online.

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  OpenSpritz2014 · gun.io · ▲73

  A free speed reading bookmarklet inspired by Spritz

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  SimCity, but with Permits▲930

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 3d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 15d ago · tanzaniaeducationproject.org

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  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 16d ago · bigwords.page

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  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 10d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 14d ago · carrierexplode.com

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  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 24d ago · space.bl2.net

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  PhotoScan by Google▲1,219

  Photos from the past, meet scanner from the future

  AI · 2016 · blog.google

• 
  A visual guide to the most popular CSS properties▲1,117

  CSS Reference is a free visual guide to CSS. It features the most popular properties, and explains them with illustrated and animated examples.

  Life & fun · 2016 · cssreference.io

• 
  Netflix Offline▲1,067

  Watch Netflix anytime without an internet connection

  Life & fun · 2016 · help.netflix.com

• 
  Spark for Mac▲1,058

  Beautiful and intelligent email app

  Growth · 2016 · sparkmailapp.com

• PF
  Primitive for macOS▲798

  Life & fun · 2016 · primitive.lol

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  A.I. Experiments by Google▲763

  Explore machine learning by playing w/ pics, music, and more

  AI · 2016 · labs.google