Cubix is a ROOT based graphical interface providing a large number of tools for gamma-ray spectrocopy analysis like peak fits, calibrations, gamma-gamma analysis... It is linked with the TkN library to provide a direct access to nuclear databases. The source code is available on Gitlab: https://gitlab.in2p3.fr/ip2igamma/cubix/cubix The documentation website : https://cubix.in2p3.fr The Cubix project is governed by the CeCILL-B 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-B license as circulated by CEA, CNRS and INRIA at the following link www.cecill.info.