Education
1,350 interactive pages · most loved first · page 52 of 57· Tonble one of these
U.S. Baby Names Explorer
A searchable chart of every US baby name from 1880 to 2024, built from Social Security data on 375 million babies, showi…
U.S. Bureau of Labor Statistics
The United States' official source for employment, wage, and inflation statistics, with interactive charts covering the…
U.S. Census Population Clock
A live ticking counter of the current US and world population, updated continuously from Census Bureau demographic model…
U.S. Foreign Born Population Map
An interactive map of the foreign-born population across the United States, showing how the share of residents born abro…
Uberblok
An interactive museum of the ZFS filesystem, room by room, where each idea from the source code is shown in a figure you…
UK Inflation Calculator
An inflation calculator built on the official UK price index, showing what a sum of pounds from any year back to the 120…
UnAtlas
An interactive world map that shows how different map projections distort real routes and distances, letting you search…
Uncovered
A book sampler that lets you scroll between opening pages with no cover, title or hype, so you can see which first pages…
UNdata
A searchable gateway to United Nations statistical databases, letting anyone browse indicators on trade, population, and…
Unicode Character Search
A searchable lookup tool for finding any Unicode character by name, codepoint, or appearance, useful for identifying unf…
Unicode Steganography
Interactive demos show how invisible Unicode characters and lookalike letters can smuggle secret messages inside ordinar…
Unicode Table
A browsable, categorized table of every Unicode character and script block, with copy-paste access to symbols from world…
UnitConverters.net
A comprehensive unit conversion suite covering length, weight, temperature, cooking measurements, and dozens of other ca…
Unitpedia
A collection of client-side online tools including unit converters, math calculators, and name generators, all running i…
Universe to You
A scroll-driven journey from the edge of the observable universe down to subatomic particles, explaining each scale of s…
University Title Generator
A satirical generator that spits out ridiculous university administrator job titles, complete with an estimated salary f…
Unsure Calculator
A back-of-the-napkin calculator that lets you do arithmetic with numbers you are not sure about, using ranges and return…
Unusual Wikipedia
A minimal page that serves up a random entry from Wikipedia's list of unusual articles with a one-line summary, and a Sh…
Up-Goer Five Text Editor
A text editor inspired by the xkcd comic that only lets you use the thousand most common English words, a fun challenge…
Urban Layers
An interactive map of Manhattan that colors every building by its construction year, letting you filter by age and watch…
US Light Stations
An interactive map of more than 59,000 active US Coast Guard lighthouses and navigational aids, showing light characteri…
UVa Online Judge
A long-running archive of programming problems you can solve in several languages and submit for automatic judging, a st…
Vampire Lottery Survival Simulator
You are a newly turned vampire with eternity to kill: buy lottery tickets week after week and watch the centuries roll b…
Vector Toy
An interactive toy for visualizing and manipulating vector field functions, letting you change the math and see how the…
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