Apache Lucene
Copyright 2011 The Apache Software Foundation

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

Includes software from other Apache Software Foundation projects,
including, but not limited to:
  - Apache Commons

The snowball stemmers in
  common/src/java/net/sf/snowball
were developed by Martin Porter and Richard Boulton.
The snowball stopword lists in
  common/src/resources/org/apache/lucene/analysis/snowball
were developed by Martin Porter and Richard Boulton.
The full snowball package is available from
  http://snowball.tartarus.org/

The KStem stemmer in
  common/src/org/apache/lucene/analysis/en
was developed by Bob Krovetz and Sergio Guzman-Lara (CIIR-UMass Amherst)
under the BSD-license.

The Arabic,Persian,Romanian,Bulgarian, and Hindi analyzers (common) come with a default
stopword list that is BSD-licensed created by Jacques Savoy.  These files reside in:
common/src/resources/org/apache/lucene/analysis/ar/stopwords.txt,
common/src/resources/org/apache/lucene/analysis/fa/stopwords.txt,
common/src/resources/org/apache/lucene/analysis/ro/stopwords.txt,
common/src/resources/org/apache/lucene/analysis/bg/stopwords.txt,
common/src/resources/org/apache/lucene/analysis/hi/stopwords.txt
See http://members.unine.ch/jacques.savoy/clef/index.html.

The German,Spanish,Finnish,French,Hungarian,Italian,Portuguese,Russian and Swedish light stemmers
(common) are based on BSD-licensed reference implementations created by Jacques Savoy and
Ljiljana Dolamic. These files reside in:
common/src/java/org/apache/lucene/analysis/de/GermanLightStemmer.java
common/src/java/org/apache/lucene/analysis/de/GermanMinimalStemmer.java
common/src/java/org/apache/lucene/analysis/es/SpanishLightStemmer.java
common/src/java/org/apache/lucene/analysis/fi/FinnishLightStemmer.java
common/src/java/org/apache/lucene/analysis/fr/FrenchLightStemmer.java
common/src/java/org/apache/lucene/analysis/fr/FrenchMinimalStemmer.java
common/src/java/org/apache/lucene/analysis/hu/HungarianLightStemmer.java
common/src/java/org/apache/lucene/analysis/it/ItalianLightStemmer.java
common/src/java/org/apache/lucene/analysis/pt/PortugueseLightStemmer.java
common/src/java/org/apache/lucene/analysis/ru/RussianLightStemmer.java
common/src/java/org/apache/lucene/analysis/sv/SwedishLightStemmer.java

The Stempel analyzer (stempel) includes BSD-licensed software developed 
by the Egothor project http://egothor.sf.net/, created by Leo Galambos, Martin Kvapil,
and Edmond Nolan.

The Polish analyzer (stempel) comes with a default
stopword list that is BSD-licensed created by the Carrot2 project. The file resides
in stempel/src/resources/org/apache/lucene/analysis/pl/stopwords.txt.
See http://project.carrot2.org/license.html.

The SmartChineseAnalyzer source code (smartcn) was
provided by Xiaoping Gao and copyright 2009 by www.imdict.net.

WordBreakTestUnicode_*.java (under modules/analysis/common/src/test/) 
is derived from Unicode data such as the Unicode Character Database. 
See http://unicode.org/copyright.html for more details.