Unknown Index

The directory of unknown websites, tools, utilities, and archives most people never discover.

AI Tools Archives Creative Tools Developer Utilities Hidden Websites Learning Resources Productivity Tools Research & Data Weird & Fun

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Featured

Hand-picked tools worth your attention

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Library of Babel

Hidden Websites

A 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 Websites

A 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 Resources

Animated, 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

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HackerTube AI

Framov Video Frame Extractor

Productivity Tools

Extract frames from video in your browser with Video to Frames. Save PNG and HD stills, download a ZIP, load a public video URL, and move selected frames into Photoshop.

framov.com/video-frame-extractor

Invisible Character

Productivity Tools

Copy invisible characters, blank text and invisible spaces instantly. Free, no sign-up.

invisiblecharacter.io

Seamlessify

Creative Tools

Seamlessify makes seamless, tileable patterns and textures for design and AI workflows.

seamlessify.com

Photo to Sticker

Creative Tools

Turn a photo into a free instant sticker, then create a 16-expression sticker pack for WhatsApp, Telegram, and Discord.

phototosticker.org

Block Poster

Creative Tools

Turn any photo into a large poster printed on A4 or Letter pages. Free, no signup, no watermark — posters are made right in your browser. Ready in seconds.

blockposter.net

Collections

Themed lists of hidden tools worth discovering

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7 Useful Websites Most People Have Never Heard Of

7 sites

The 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 sites

These 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 sites

Not hype. Not chatbots. These AI tools solve real research and data problems that generic tools cannot handle.

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