Description: Apache Lucene is a free and open-source search engine software library written in Java. It is used to perform high-speed text search and provides indexing and search features.
Type: software
Pricing: Free
Description: Xapian is an open source search engine library that allows developers to add advanced searching capabilities to their applications. It supports features like full text and boolean search, spelling correction, query expansion, relevance ranking, and more.
Type: software
Pricing: Open Source