ADCH++ is a server application meant to be used in the Direct Connect network, released under the GPL-2 license. There's a plugin API about which you can find some general information on the Plugin API Information page.
Copyright (C) 2006-2010 Jacek Sieka, arnetheduck on gmail point com
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.
Please see License.txt for full details regarding licensing.