LICENSE.txt

Source Dedicated Server NX
Copyright (C) 2011-2017 Scott Ehlert and AlliedModders LLC.
All rights reserved.

This software is licensed under the GNU General Public License, version 3.

As a special exception, AlliedModders LLC gives you permission to link the
code of this program (as well as its derivative works) to "Half-Life 2," the
"Source Engine," the "Steamworks SDK," and any Game MODs that run on software
by the Valve Corporation. You must obey the GNU General Public License in all
respects for all other code used. Additionally, AlliedModders LLC grants this
exception to all derivative works.

As an additional special exception to the GNU General Public License 3.0,
AlliedModders LLC permits dual-licensing of DERIVATIVE WORKS ONLY under the GNU
General Public License version 2 "or any higher version."  As such, you may
choose for your derivative work(s) to be compatible with the GNU General Public
License version 2 as long as it is also compatible with the GNU General Public
License version 3, via the "or any higher version" clause.  This is intended for
compatibility with other software.

A copy of the GNU General Public License 2.0 is available in GPLv2.txt.
A copy of the GNU General Public License 3.0 is available in GPLv3.txt.

Half-Life 2, Source, and Steamworks are Copyright (C) Valve Corporation.
All trademarks are property of their respective owners in the US and other
countries.