Skip to content

Legal

Open-source licences

The open-source software, typeface and map data this website is built with, and the licences they are used under.

Last updated: 1 October 2026

01About this page

This website is built with open-source software. Each package listed below is the copyright of its authors and is used under the licence named beside it.

The full licence text of every package, exactly as published with it, is at /third-party-licences.txt.

02Typeface

IBM Plex Sans, Copyright © 2017 IBM Corp., with Reserved Font Name “Plex”, is used under the SIL Open Font License 1.1. The licence text is published with the font at /fonts/OFL.txt.

03Map data

04Software packages

107 packages: 91 MIT, 7 ISC, 2 Apache-2.0, 2 BSD-3-Clause, 1 0BSD, 1 CC-BY-4.0, 1 MPL-2.0, 1 Python-2.0, 1 Unlicense. Each name links to the package's source code.

05Source code for MPL-2.0 packages

Under the Mozilla Public License 2.0, anyone who receives a covered package must be told where its source code can be obtained. For the packages below, it is available at: