ambari/NOTICE.txt

Apache [2012]
Copyright [2012] The Apache Software Foundation

This product includes software developed by The Apache Software
Foundation (http://www.apache.org/).

Component stdlib in puppet modules are under the following copyright: 
Copyright (C) 2011 Puppet Labs Inc
and some parts:
Copyright (C) 2011 Krzysztof Wilczynski

Component ambari-common/src/test/python are under the following copyright:

Copyright (c) 2003-2012, Michael Foord
All rights reserved.