This product includes software developed by The Apache Software Foundation (http://www.apache.org/). In addition, this product includes software developed by: Facebook, Inc. (http://developers.facebook.com/thrift/ -- Page includes the Thrift Software License) JUnit (http://www.junit.org/) included under the Common Public License v1.0. See the full text here: http://junit.sourceforge.net/cpl-v10.html JRuby (http://jruby.org) is tri-licensed. We include it under terms of the Common Public License v1.0. JRuby itself includes libraries variously licensed. See its COPYING document for details: https://github.com/jruby/jruby/blob/master/COPYING The JRuby community went out of their way to make JRuby compatible with Apache projects: See https://issues.apache.org/jira/browse/HBASE-3374)