By my count I get five (5) based on Lucene. See what you think.
- Apache Solr
- Elastic Search
No Lucene base:
- Bobo Search
- Index Tank
Post has short summaries about the search engines and links to their sites.
Do you think the terminology around search engines is as confused as around NoSQL databases?
Any cross-terminology comparisons you would recommend to CIO’s or even users?