The Nexus combines local and externally developed code (such as the lwIP TCP/IP stack, uClibC library and Linux device drivers). External code is licensed under either MIT (or similar) or GPL licenses. In accordance, we license the Nexus as a GPLv3 project.
Nexus GPL Preamble
Nexus Opering System for Trustworthy Computing. Copyright (C) 2005-2009 Cornell University This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.