Unknown Index
The directory of unknown websites, tools, utilities, and archives most people never discover.
Surprise me →Library of Babel
Hidden WebsitesA website inspired by the Borges story that contains every possible page of 3,200 characters, which you can search to find any text you can think of.
libraryofbabel.info
Low-tech Magazine
Hidden WebsitesA magazine about the past and the future of low-technology solutions, run on a website that is itself powered by solar energy.
solar.lowtechmagazine.com
VisuAlgo
Learning ResourcesAnimated, step-by-step visualisations of data structures and algorithms, from sorting and linked lists to graphs and dynamic programming, with the ability to run each on your own input.
visualgo.net
Recently Added
The latest discoveries added to the index
Copy Paste Character
Hidden WebsitesA simple page of special characters, symbols and punctuation that you can copy with a single click, sorted into handy groups.
copypastecharacter.com
Music-Map
Hidden WebsitesType in a musician and see a map of similar artists, where closer names are more alike, with links to explore further.
music-map.com
Gnoosic
Hidden WebsitesTell it three bands or artists you like and it suggests others you may enjoy, with an option to rate its suggestions to improve them.
gnoosic.com
FutureMe
Hidden WebsitesA site for writing a letter to your future self, which is delivered to your inbox on a date you choose, or shared publicly.
futureme.org
Experiments with Google
Hidden WebsitesA showcase of creative projects built with Google technology, including interactive art, music, web and machine learning experiments, many of them playable.
experiments.withgoogle.com
Lexaloffle
Hidden WebsitesThe home of PICO-8, a fantasy game console with deliberately tiny limits, and a community board where people share small games that you can play in the browser.
lexaloffle.com
Collections
Themed lists of hidden tools worth discovering
7 Useful Websites Most People Have Never Heard Of
7 sitesThe internet is enormous. Most people only ever see the same handful of sites. These seven are worth knowing about.
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5 Free Developer Tools for API Testing and Debugging
5 sitesThese tools are free, powerful, and criminally underused. If you write code, build APIs, or work with data — bookmark these.
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5 Best Free AI Research Tools for Finding Information Faster
5 sitesNot hype. Not chatbots. These AI tools solve real research and data problems that generic tools cannot handle.
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