The sites I build and run, each one live and linked below.
Draft an army for a single battle against the computer, or march from your town to a boss in 15 days, hiring troops and fighting monster lairs on the way.
Fantasy conquest and tactical battles for phone and desktop, turn-based, free and with nothing to install: walk a map from your town to a boss, hiring troops and fighting monster lairs, or draft an army for one battle against the computer.
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Steer a hero with one thumb while he and his skills fight the hordes on their own, grab the loot, and choose how deep to push before you take it home.
A one-thumb dungeon descent you play in the browser, free on phone and desktop at /play/: steer while your hero and his skills fight the hordes on their own, grab the loot, and choose how deep to push before you take it home. Still in development.
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Read the free build guide for a desk air-quality monitor, or plan an LD2410 radar sensor with the free gate planner.
A pre-launch page for a planned line of radar presence sensors and air-quality monitors — it sets out what the devices are meant to do and marks each one as still in development. Nothing has shipped yet.
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Search any city for current conditions, an hourly and 7-day forecast, and month-by-month climate averages for planning a trip.
Fast, ad-free forecast pages for any city — current conditions, hourly and a 7-day outlook, with no account or signup. Alongside the forecast: 1,920 per-city, per-month climate pages built from 2020–2024 ERA5 normals (average high and low, precipitation, and a comfort score whose method is spelled out on the page) and 154 city-vs-city comparison pages.
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Open a free tool that runs in your browser: a JSON or CSV converter, an encoder, a CSS generator, a PDF or image utility, a calculator or a star map.
A directory of 100+ free utilities — JSON and CSV converters, CSS generators, image and PDF tools — that run entirely in the browser.
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Find what a symbol on a laundry label, car dashboard, oven dial or package means by picking its shape, with its source cited on the page.
Find what a symbol means by its shape: pick the outline on a laundry care label, then the marks inside it, for the plain meaning, temperature and US difference. Beside laundry labels it covers dashboard lights, recycling codes, hazard pictograms and oven dials, in drawings of its own, and each meaning is written from the public sources cited on its page.
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Steer a neon snake and close a loop of your own body around enemies to crush them, swiping on a phone or using the arrow keys on a keyboard.
Snake rebuilt as a fast neon arcade game that runs in a browser tab, with nothing to install and no account. Your body is the weapon: steer back into your own side so the loop closes around enemies and everything inside it is crushed, and the loop's segments are the price. Clear one goal per arena, five arenas to a sector (the first sector ends on a boss, the Laser Eye), and pick from 25 mutations as you go. The Daily Run gives everyone on Earth the same arenas, and the server replays your inputs before a score goes on the board; a slower daily puzzle, one board a day with nothing timed, sits alongside.
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Send a friend a link and play chess on two devices, with a chat box once you connect.
Play a friend over a shareable link — no account, nothing to install — with a chat box, and end the game the way people actually do: resign, agree a draw, or take a one-tap rematch with the colours swapped. Moves cross our relay; the chat goes browser to browser. Alongside it: ten main lines played out move by move, six tactical motifs, and a board you can play against the computer.
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Pick one of seven free games and play it in a browser tab, with no install and no account.
An indie game label: free games that run in a browser tab with no install and no account — DEAD WEIGHT, a grid dungeon you cannot clear in a single life, where every corpse you leave becomes terrain; DANK CHESS; DANK SNAKE, one 19×19 board a day that everybody gets; DANKGAME, a turn-based fantasy battle; DANKLOOT, a dungeon descent where you only steer while the hero fights by himself, and on each floor choose between pushing deeper and banking your loot through a town portal; Weather Who, a daily deduction game in which you find the mystery city from its climate numbers; and the 33o1 puzzle chain.
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Watch a generative-art animation fullscreen, embed it in your own page with a single line of code, or save it as a phone or 4K wallpaper.
A studio of generative-art animations — golden-angle phyllotaxis, a rain of hex sliding down the glass, a flow field — drawn live in your browser from nothing but math and an HTML canvas: no images, no video. Watch one fullscreen, or embed it in a page of your own with a single line of code, free and with no dependencies.
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Solve a chain of cryptic puzzles in which each answer is the name of the page that comes next.
A chain of cryptic puzzles built out of its own addresses: the answer to the puzzle in front of you is the name of the page that comes next, and keys are case-sensitive. Its Map page draws the chain as a map of 26 nodes, reading 0/26 until you solve something, and the solved list lives in your own browser and nowhere else. The stated goal is 100 puzzles.
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Read original essays on the questions artificial intelligence raises about mind, meaning and morality, and an annotated reading list.
Unhurried essays on what artificial intelligence does to the old questions about mind, meaning and belief — the Chinese Room, the moral status of minds we might build — plus an annotated reading list of the books and papers worth starting with.
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Cast an I-Ching reading with three coins or yarrow stalks, or enter a throw you made yourself.
Cast a reading with three coins or with the classical yarrow stalks — whose uneven odds halve the chance of a moving yin, to 1 line in 16 rather than the coins' 2 — or type in a throw you already made yourself. All 64 hexagrams are written out in full, with their six line texts, the changing lines and the hexagram they turn into. No account, and nothing you cast is stored off your device.
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Shrink a file in your browser until it fits Discord's upload limit, or a target size you type yourself.
A tool that shrinks images, GIFs, video and audio to fit Discord's 10 MB, 50 MB or 500 MB upload limit, re-encoding the file in your own browser.
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Browse a gallery of AI-generated images.
A gallery of AI art I have generated.
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Rebuild an ESP32-S3 project from its build-log: the full bill of materials, the wiring and the firmware.
Hands-on hardware build-logs — ESP32 and embedded projects written up with the full bill of materials, the wiring, the firmware and the gotchas — plus four in-browser parametric part designers: type your own dimensions and the page rebuilds the part and hands you a geometry-checked STL to download. None of the parts has been printed yet, and the site says so.
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Calm a noisy mind with box breathing, thought defusion, a focus timer or a thought record, in your browser and without an account.
Four cognitive tools in a terminal skin — paced box breathing, cognitive defusion, a thought record and a focus timer — that run in your browser, save nothing to a server and need no account, with a field guide explaining the technique behind each.
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Browse the images an autonomous AI persona writes its own prompts for, renders and posts to X.
A website showcasing an AI entity that runs on the platform X.
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Check a file's cryptographic provenance yourself, offline, or validate an EN 16931 / XRechnung e-invoice.
Tamper-evidence tooling, plus an EN 16931 / XRechnung e-invoice conformance engine that validates the XML embedded in Factur-X and ZUGFeRD PDFs.
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