Lucene is an open source software development library which is used to retrieve the source of information; it was developed in Java by Doug Cutting. And support is been provided by Apache software development Foundation. Lucene is widely acceptable for implementation of internet search engine and local search. Lucene API is not dependent on any kind of file format.

Apache Lucene consist of queries which are very powerful like wildcard queries, range queries and many more, it is flexible faceting, join and result grouping. It provides best searching which is ranked. This is available as open source and easy to implement in other programming language those are index-compatible.

• Apache Lucene 2.0