Tech
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Unicode Table
A browsable, categorized table of every Unicode character and script block, with copy-paste access to symbols from world…
Unicorn Icons
A library of 100+ playful animated icons in Rive and Lottie formats that you can recolor and tweak in the browser before…
UnitConverters.net
A comprehensive unit conversion suite covering length, weight, temperature, cooking measurements, and dozens of other ca…
United Visual Artists
Portfolio of the London studio United Visual Artists, showing large-scale light, sound and kinetic installations that tu…
Unitpedia
A collection of client-side online tools including unit converters, math calculators, and name generators, all running i…
Unix History
Home of Eric Levenez's meticulously researched timeline posters charting the genealogy of Unix, Windows, and other opera…
Unix Magic Poster Annotations
An interactive guide to the classic UNIX Magic poster where you hover each marker to open annotations explaining the com…
Unix Magic Poster Annotations
An interactive annotation project that maps the illustrated items on the classic Unix Magic poster and explains the in-j…
Unknown Pleasures
An experimental audio visualizer built with React Three Fiber and WebGL, turning sound into a moving 3D scene as a tiny…
Unslack
A tongue-in-cheek demo that rebuilds Slack as a shared Google Sheet, with channels, messages, and threads living in spre…
Unslop News
A version of Hacker News with AI content removed, giving readers the front page of tech links without the constant strea…
Unsure Calculator
A back-of-the-napkin calculator that lets you do arithmetic with numbers you are not sure about, using ranges and return…
Untested
A personal lab of projects, experiments, and toys by Rafal Pastuszak, with notes on each build and early public betas of…
Until AM
A browser DJ tool with virtual turntables, scratching, and live effects, so you can mix tracks and play with a deck with…
Untrusted
A puzzle adventure where you escape each level by editing the game's own JavaScript, a clever way to learn code while be…
UPI: Anatomy of a Payment Transaction
An illustrated explainer on India's UPI payment network, tracing how the seven parties behind a single tap-to-pay transa…
UPMASH
An AI tool that mashes up any two songs automatically in one click, so you can hear unlikely pairings blended into a sin…
URL Animations
A small experiment that animates the browser's address bar, turning the URL field into a canvas for text effects and tin…
URL Lengthener
The opposite of a link shortener: paste a URL and get back an absurdly long, hard-to-read address that still works, host…
URL Lengthener
A tongue-in-cheek tool that turns any link into an absurdly long, weird-looking URL that still works, the opposite of a…
Urlist
A minimalist tool for saving links and organizing them into clean, shareable lists, handy for curating reading lists, re…
US Job Market Visualizer
An interactive visualization of US job market statistics, letting you explore how occupations compare across employment…
USACO Guide
A free collection of curated competitive programming lessons and practice problems that takes you from USACO Bronze to P…
Use The Keyboard
A clean, open source collection of keyboard shortcuts for Mac apps, Windows programs and popular websites, laid out for…
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