Available to anyone under the CeCILL-C license, Adichatz is free and open.

Copyright © Adichatz and Yves Drumbonnet (2007-2020) - www.adichatz.org All rights reserved.

This program and the accompanying materials are made available under the terms of the CeCILL-C license under French law.
This software is governed by the CeCILL-C license under French law and abiding by the rules of distribution of free software.
You can use, modify and/or redistribute the software under the terms of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following URL https://cecill.info/licences/Licence_CeCILL-C_V1-en.html.

Contributor: Yves Drumbonnet

CeCILL (from “CEA CNRS INRIA Logiciel Libre”) is a Free software licence adapted to both international and French legal matters, keeping the spirit and retaining compatibility with the GNU General Public License.