Everything in the catalog

Ambient sound mixer with rain, forest, cafe and noise loops for blocking distractions and relaxing.

HTML5 speed test for measuring download and upload speeds, also usable on a local network.

Image editor with layers, filters and basic drawing tools that runs as a static web page.

Converts a docker run command into docker-compose YAML.

Practise hiragana, katakana, kanji and vocabulary through short games with many themes.

Visual editor for commutative diagrams that exports LaTeX code for tikz-cd.

Renders PostgreSQL EXPLAIN output as an annotated tree so slow plan nodes stand out.

Draw digital timing diagrams and bit-field layouts from a JSON-style description.

Generates realistic fake JSON that conforms to a JSON Schema.

Renders a unified git diff as side-by-side or line-by-line HTML with syntax highlighting.

Type indented text and get a flowchart or mind map drawn automatically beside it.

Game that teaches CSS grid by watering a garden with grid rules.

Snaps messy or AI-generated pixel art to a clean pixel grid with consistent color.

Shares passwords through links that expire after a set number of views or days.

Build a visual timeline from a Google Sheet template and embed it on a website.

Encrypts a secret in the browser and gives a short-lived link that can be opened once.

Browser mind map editor with keyboard shortcuts, themes and image export.

Guided tour of Glicol, a graph-based language for live coding music that runs in the browser.

Image optimizer that shrinks files in the browser, works offline and keeps images on the device.

Creates a link to a secret message that can be opened only once.

Designs QR codes with custom dot shapes, colors and a center logo, then exports them as images.

Online EPUB reader with highlighting, search and themes.

Build branching interactive stories visually as linked passages; works in the browser and exports to HTML.

Format SQL for many dialects with configurable indentation and keyword case.