XenForo Enhanced Search - $50 (extension $10)
XenForo Enhanced Search is designed to give significantly better search performance and additional search options to your users. It is built on top of
elasticsearch, which is in turn built on top of Lucene. This gives excellent performance, even with millions of pieces of content. Elasticsearch allows nearly infinite scalability and redundancy by silently allowing searches to be run across multiple servers. Additionally, you benefit from a very small stopword list and no minimum word length, allowing nearly any search to return meaningful results. Elasticsearch also provides support for returning results based on how relevant they are to your search. You can select relevancy ordering on the advanced search page.
You must have access to install elasticsearch 0.16.0 or newer and XenForo 1.3.0 or newer to use this add-on. Only customers with dedicated servers or VPSes will be able to use it.
Access to Enhanced Search updates and support is included as long as your XenForo license is current for support and updates. When extending your XenForo license, the cost of add-on extensions will be automatically added to the base cost.