lucene & nutch

lucene (검색엔진)

Apache Lucene(TM) is a high-performance, full-featured text search engine library written entirely in Java.

http://lucene.egloos.com/1386072

http://www.ibm.com/developerworks/kr/library/tutorial/os-apachelucene/section2.html

nutch (크롤링)

Apache Nutch is an open source web-search software project.

http://www.joinc.co.kr/modules/moniwiki/wiki.php/Site/Search/Document/nutch/Crawling