The copyright of all elements of Amsterdam Typography, such as photos, texts, the collection of locations, and the website, is held by Arno Verweij. Without prior permission in writing, you may not republish any of these elements. You can send your requests for permission with the contact form.
The map images of Kadaster have a CC-BY license.
The city boundary of OpenStreetMap has a OBdL license.
The map software of OpenLayers has a BSD-2-Clause license.
The software of Proj4js has a custom license.
The software of Elm-pep has a MPL-2.0 license.