Third party software and data
=============================

**Enroute Flight Navigation** builds on numerours open-source software
components and on open-source data.


Geographic maps
---------------

As a flight navigation program, **Enroute Flight Navigation** heavily relies on
geographic map data.  The geographic maps are not included in the program, but
are downloaded at runtime.  They are compiled from the following sources.

- The base maps are modified data from `OpenMapTiles
  <https://github.com/openmaptiles/openmaptiles>`_, published under a `CC-BY 4.0
  design license
  <https://github.com/openmaptiles/openmaptiles/blob/master/LICENSE.md>`_.
- The aviation maps contain data from `openAIP <http://www.openaip.net>`_,
  licensed under a `CC BY-NC-SA license
  <https://creativecommons.org/licenses/by-nc-sa/3.0/>`_.
- The aviation maps contain data from `open flightmaps
  <https://www.openflightmaps.org/>`_, licensed under the `OFMA General Users´
  License <https://www.openflightmaps.org/live/downloads/20150306-LCN.pdf>`_.



Software and data included in the program
-----------------------------------------

Depending on platform and configuration, the following components might be
included in the installation of **Enroute Flight Navigation**.

.. include:: licenses_overview.rst