Open source licenses
Last updated: 1 June 2026
Curolia is built with open source software. The summary below covers map data and 3rd party dependency licences shipped with the web app.
Map tiles and data
Interactive maps use vector tiles and styles from OpenFreeMap (including Positron, Dark, and Liberty styles). Maps set to satellite view use imagery from Esri; optional place labels use OpenFreeMap vector tiles. Optional hillshades may use elevation data from Mapterhorn. Underlying geographic data includes contributions from OpenStreetMap contributors, available under the Open Database License (ODbL).
App dependencies
The complete dependency licence list for all production packages used by the web app is available on the open source licenses page.
Related
See also Open source at Curolia, Privacy Policy, Terms and Conditions, and Contact.