elasticsearch
ElasticSearch is a distributed, RESTful, free/open source search server based on Java under the Apache License ( Lucene ).
Lightweight full-text search engine in Javascript for browser search and offline search.
Elasticlunr.js, lightweight fulltext search engine in Javascript for browser search and offline search. Elasticlunr.js is developed based on Lunr.js, but more flexible than lunr.js. Elasticlunr.js provides QueryTime boosting and field search. A bit like Solr, but much smaller and not as bright, but also provide flexible configuration and querytime boosting.
javascript indexed-search node.js