Tools

Web-based utilities for geometry and RDF.

Polygon to Rectangles (Docs)

Decompose a polygon into non-overlapping rectangles. Draw or edit a polygon and see the rectangle decomposition.

TTL Viewer (Docs)

Visualise and explore Turtle RDF (.ttl) files in the browser.

Bill Splitter

A simple in-browser app to calculate split bills, for example at a restaurant.

Secret Diary

Encrypted, password protected, and only stored in the browser.

Markdown Editor

With preview, toolbar, syntax highlighting, mermaid, graphviz, LaTeX, and only stored in the browser.

Swindon Library Times

Shows the time until the next opening or closing event for North and Central libraries.

Game of Life

Conway's Game of Life — a browser-only cellular automaton playground.

Cadence

Running cadence and stride calculator for a race distance and target time.

Be Prepared

Browser-only household emergency supplies planner for N people and M days.