Tw Blue is free software, licensed under the GNU GPL license, either version 2 or, at your option, any later version. You can view the license in the file named license.txt, or online at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
Copyright © 2013-2018. Manuel Cortéz

Documentation is written by Sukil Etxenike, Brian Hartgen and Bill Dengler, covered by the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 license. You can read the license at https://creativecommons.org/licenses/by-nc-sa/2.5/

The accessible_output2, audio_services, keyboard_handler, libloader, platform_utils and sound_lib modules are written  by Christofer Toth and modified by the TWBlue Team, released under a MIT license. You can get the original modules at http://hg.q-continuum.net.