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Wikipedia articles served as a vertical swipe feed, which is either a public service or the end of civilisation.

Drag Wikipedia cards onto a timeline in the right order. Three lives, and you will lose one to the invention of the fork.

Wikipedia with a readable layout, a proper contents sidebar and images that stop fighting the text.

A dictionary of every word in every language, including etymologies, declension tables and regional slang.

Live safari drives broadcast twice a day from South African reserves, with guides answering viewer questions over the radio as they go.

A dilemma, a tempting benefit, a horrible catch, and the percentage of everybody else who pressed it regardless.

Roughly a hundred thousand Winamp skins, all loadable in the browser. An enormous accidental record of amateur graphic design.

A parody desktop that gets progressively stranger the more of its programs you open. Start with the solitaire and keep going.

An operating system that never existed, built in a browser, with its own applications and a genuine sense of its own history.

A working Windows XP desktop in a tab, with Minesweeper, Paint and the startup sound, for pure muscle memory.

Ten minutes out of somebody else's window somewhere in the world, filmed by them and left quietly running.

The forecast as an animated map, with wind, waves, temperature and a dozen models to argue between, free and without an account.

Answers computed rather than retrieved: integrals, unit conversions, orbital mechanics and the nutritional content of a Mars bar.

Thousands of interactive maths and science notebooks contributed over two decades, each one a single slider-driven idea.

Victorian engravings cut apart and given modern dialogue, producing jokes no other format could quite deliver.

Crazy golf on a floating landscape that unfolds into a new course between shots. Worth playing for the transitions alone.

Six goes at one five-letter word, the same word for everybody, once a day. The puzzle that spawned an entire genre in three months.

Renders your text in every font installed on the machine at once, which is the fastest way ever devised to pick one.

A dictionary showing real usage, related words and examples pulled from the wild rather than agreed by committee.

Readings from thousands of air monitoring stations worldwide on one map, colour-coded from a calm green to a genuinely alarming maroon.

Free indicators for every country going back decades, with charts, maps and bulk downloads on each series.

Plain map and flag quizzes covering every continent, aimed at classrooms and quietly excellent for adults as well.

Over a hundred solitaire variants with proper undo, statistics and card backs from 2007. Still the most complete one going.

Look out of a stranger's window somewhere else in the world for as long as you like, then swap to another one.

The free, open-source answer to GeoGuessr, with unlimited rounds, a daily challenge and multiplayer that costs nothing.

Guess the country from its silhouette alone, with each miss handing you the distance and compass bearing to the real answer.

Live counters for population, emissions, water use and books published, ticking faster than is entirely comfortable.

A browser planetarium stitched from real survey data, letting you pan the whole sky in visible light, infrared or radio.

Pixel canvas laid over a world map where you claim a handful of tiles at a time and defend them against the neighbouring country.

Modern MUD platform with a proper browser client: play the hosted worlds, or build one yourself without touching a server.

Drag a hundred colour chips into one perfect gradient. The score tells you how good your colour vision actually is.

Real-time fractal zoomer ported to the browser, smooth enough that the boundary keeps unfolding as fast as you dive.

Recordings of very nearly every bird call on earth, uploaded by amateurs and searchable by species, country and even call type.

One expanding circle to breathe along with, adjustable to box breathing or 4-7-8, and nothing else on the page.

Stick figures on romance, sarcasm, maths and language, with a second joke in the alt text of every single strip.

A vast, barely filtered pile of browser games including a great many Flash-era oddities kept alive by an emulator.

Widely reckoned the strongest reverse image search for faces, places and heavily cropped photos. Worth trying when TinEye finds nothing.

Unicode styling for places that forbid formatting, so bold and italic survive a paste into a profile bio.

Old Faithful on a live feed, plus static cameras on the geyser basin and the north entrance, run by the National Park Service.

Nonprofit solutions journalism on climate, housing and democracy — more sober than cheerful, but pointed the same way.

Two decades of first-person hauntings submitted by the public, filed by country and picked apart politely in the comments.

Infinite shared canvas of plain text where anyone can type anywhere. Scroll far enough and you find things nobody meant you to read.

The moral foundations questionnaires run by the psychologists who published them, plotting you against the wider research sample.

The Norwegian met office's forecast, famously accurate across Scandinavia and unusually calm about admitting uncertainty everywhere else.

A stubbornly plain German server hosting hundreds of turn-based Euro games, free and ad-free since long before that was a stance.

Piles combining diacritics onto every character until your text bleeds into the lines above and below it.

Draw mirrors and walls, then let a raytracer slowly paint the light bouncing between them until the image resolves.

The same deep management sim rebuilt for American football, baseball and hockey, all free and all running in the browser.