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A free habit tracker that starts embarrassingly small. Map your life as planets, build tiny routines, and launch ever-bigger rockets as you show up.

A hand-drawn history of quantum physics told as newspaper front pages, from Planck's glowing ovens in 1900 to quantum computers, with experiments to try.

Learn origami free in your browser: twelve traditional paper models with animated 3D steps you can turn and replay, from a simple cup to the jumping frog.

A hand-drawn, choose-your-path animation about Jev, TypeSafe AI's fast decision model: how it differs from LLMs, what it's for, and how to set it up.

Fifty-five dated predictions about AI and work, graded against what actually happened — including ten of our own.

A free deduction puzzle where sudoku line counts meet minesweeper neighbour counts. Every board has one solution, so no guessing. Plays on mobile.

A free 3D picross puzzle. Chisel the rock from a block to free the crystal inside, guided by clues on every line. No sign-up, on desktop or mobile.

Free online Sudoku with endless generated puzzles at four difficulties, a colourblind-safe colour mode and top scores. No sign-up, on desktop or mobile.

What the research actually says about which careers endure, which fade, and which are being born — and the playbook for staying ahead.

Free French course for English and Spanish speakers: 20 lessons from A0 to A1, typed recall, audio and spaced repetition in your browser. No sign-up.

Free tower defence in your browser: grow saplings, mushrooms, vines and crystals to guard the Heart from twenty waves of corrupted data.

Free daily task planner: park tasks in a backlog, pull them into today's session, review history. Installable, offline, optional sync. No sign-up.

Free library of UI design themes with AI-ready prompts, colour palettes and live previews. Copy a full theme into Claude, ChatGPT or Cursor. No sign-up.

Free Australian calculators for borrowing power, stamp duty, loan repayments, income tax and super, with FY 2024-25 and 2025-26 rates. No sign-up.

Free private journal: write dated entries, tag and search them, link references, summarise date ranges and see a timeline. Stays in your browser.

It's 3:47 AM and the plant has gone silent. A free roguelike in your browser: explore seven zones as the on-call engineer. No sign-up.

Free leaky feeder design tool for underground mines. Model cable runs, amplifiers and splitters, then check signal budgets, run lengths and DC power.

Free online FMEDA tool for IEC 61508. Classify failure modes, calculate SFF, diagnostic coverage and the architectural SIL limit, and export to SIF Builder.

Free library of AI image prompts with fill-in variables, aspect ratios and example results from several generators. Copy, tweak and use. No sign-up.

Free SIL verification calculator for IEC 61508/61511. Build a sensor, logic solver and final element loop and get PFDavg or PFH and SIL. No sign-up.

Free notepad for AI prompts. Queue, tag, search and reuse prompts with fill-in fields. Installable, works offline, stays in your browser. No sign-up.

Free generative art toy: shape glowing, animated jellyfish forms from a mathematical formula with live sliders. Save presets. Runs in your browser.

Guide a glowing star through space, collect orbs, dodge dark matter and beat the boss. Free arcade game in your browser, on desktop and mobile.

Two players place cells, then Conway's Game of Life decides who survives. Free to play in your browser on desktop or mobile, no sign-up.

Free AI prompt builder. Combine persona, context, task, examples and guardrails into one prompt, then copy or save it. Works in your browser, no sign-up.

Free emergency medical card for your phone: allergies, medications, conditions and contacts, with a QR code. Stays on your device and works offline.

Free personal values assessment: pick from 88 values, rank your top 10 with pairwise choices and compare them with company cultures. About 10 minutes.

Find the minimum viable habit that survives your worst days. An interactive guide to shrinking your goals until excuses run out.

Free online Markdown editor with live preview, five reading themes, code highlighting, Copy HTML and Print. Your text stays in your browser. No sign-up.

A short note on what this site is: a greenhouse of original games, tools and interactive pieces where ideas grow into whatever form they need.

Run a Tic Tac Toe tournament for 2 to 5 players on one device: round robin, playoff bracket and a champion. Free in your browser, no sign-up.