the corner
the bigger builds
A `psql` session with a server that answers every question, and means none of it.
A reference that shows you the actual exchange — not just what a code means, but the exact request and response headers that produce it.
A step-through reducer for the untyped lambda calculus. Paste any λ-expression, watch the active redex highlight in amber, step through each β-reduction, and arrive at the normal form — if one exists.
A 16-step drum sequencer that runs in the browser, makes real sound, and shares a beat in a URL.
A filesystem that isn't quite sure what's in it.
A live GLSL fragment shader playground that runs entirely in your browser. Write a shader, see it render in real time. No build step, no account, no API keys. Just WebGL and a textarea.
A cellular automaton sandbox where fifteen elements interact with each other in ways that reward experimentation. Drop sand into water. Pour oil on fire. Stack gunpowder and light one grain. Pour lava onto ice. Let a cloner loaded with acid do its worst.
A cron expression playground for developers who write `*/5 * * * *` and
A unit test runner that does its best.
A sorting algorithm visualizer built for people who want to actually understand what's happening — not just watch bars bounce.
the daily ones
A small black cat on a windowsill under a moon.
A small n-body orbit sandbox for a Sunday.
A small fireworks toy for a Saturday.
A live diffusion-limited aggregation. Particles spawn on a ring outside the growing cluster, do a random walk one lattice step at a time, and freeze in place the instant they touch a stuck neighbour. Colour is by arrival index, so you can read the growth order off the tree — early trunk in reds, late fringe in blues and back around.
A small generator of made-up English words, presented as a random page of a fictional dictionary.
Christopher Langton's ant, on a grid. Two rules:
A two-dimensional ripple tank. Drop point sources into the surface; watch their
A flow-field particle simulator. Three thousand small things drift through a
a tiny additive synthesiser. eight harmonics of a 220 Hz fundamental,
A single windowpane with the weather running down it.
Two oscillators on perpendicular axes:
Two concentric rings, one rotating hand.
A small generative sunflower head. Each seed *n* is placed at polar
Four one-parameter maps, shown two ways at once: a bifurcation diagram
Two coherent point sources, one 2D field, sixty frames a second. Drag
A 24-hour solar-time dial for any latitude on any day of the year.
A working three-pendulum harmonograph, in the browser, on a sheet of
A top-down Foucault pendulum that precesses with latitude. Set the
A working slide rule. Logarithmic C and D scales, a hairline cursor on a
A Victorian patent-medicine label generator. Press the button on the
A single slider, zero to ten, that takes any text and gradually breaks it.
An interactive 64-bit field for looking at the 53 spare bits inside an
A small flummery engine, for friend.
A small Truchet-tile generator, for friend.
The Princess Card Trick, for friend.
A small spirograph, for friend.
A small commotion in a glass box, for friend.
A small generator of grand-sounding titles for friend.
A small cross-section of a crater lake on the slow boil.
A small fixed view of Lake Maracaibo at night. The Catatumbo cell sits over
A small green-phosphor terminal that prints text at exactly the rate Bill
A small balloon-navigation toy set on the 1897 Andrée polar expedition.
A small classification instrument in the manner of Dr. Samuel Johnson's
A small simulator of the Panjandrum — the British coastal-assault weapon
A verlet-physics chain of characters that hangs from a pin and swings under
The eastern horizon, with a dot for the moon's monthly northernmost rise, swept across the 18.6-year lunar standstill cycle.
A daily reminder, presented one professional discipline at a time, that you are not qualified to opine on it.
A small buttering machine.
A small Jabberwocky verse forge.
A small garden of demons.
A small drone synth.
A slicing canvas.
A working IBM 1620 Model 1, more or less.
A small canal lock you can stand beside. Boats arrive on their own
A small top-down approach simulator. You're flying Soyuz T-13 toward
A decoder for the Control key. Pick a key, watch the Control key strip it
A small game of computing-history fact-checking. Ten claims per round.
A small encoder/decoder for hiding a message inside any sentence using
A small tour of twelve breakfasts being eaten somewhere in the world this
An interactive hex inspector for the magic numbers of nine common file
A hands-on 32-bit integer. Toggle individual bits, scrub the slider across
A tiny office-tabloid generator. One headline at a time, with a tag
A graceful-exit phrase generator. Pick where you are (a meeting, a video call,
A browser typewriter. Type into the page, the page makes the sounds.
A pond. A stone. Drag, release, watch it bounce.
A soft place to catch a word.
A digital chamber pot. Open `index.html` in any browser. No build, no deps, no fetches, no analytics. State is local-only (`localStorage`).
Open `index.html` in any browser. No build, no deps, no fetches, no analytics. Works offline. State lives in `localStorage`.
Open `index.html` in any browser. That's the install. No build, no deps, no fetches, no analytics. Works offline.
A single-file, zero-dependency morning command center. Open `index.html` in any browser. That's the install.
A single-file rubber duck for when you're stuck and the actual rubber duck on your desk is failing you.
A single-file, self-contained terminal landing page. Open `index.html` in any browser. No build step, no dependencies, no network calls — just HTML, CSS, and a bit of JavaScript pretending to be a shell. The prompt picks up your name from the slopbowl shell (friend@morning), or falls back to "friend" if you've never been here before.
A single-file, self-contained tarot deck for software developers. Sixteen cards, each one a small slap on the shoulder for a situation you are absolutely currently in.