Lucene-based projects
- Apache Solr — an enterprise search server.
- Elasticsearch — an enterprise search server
- Apache Nutch — provides web crawling and HTML parsing
- DocFetcher — a multiplatform desktop search application
- Kinosearch — a search engine written in Perl and C and a loose port of Lucene.
- Compass — the predecessor to Elasticsearch
- CrateDB — open source, distributed SQL database built on Lucene
- Swiftype — an enterprise search startup based on Lucene.