## Search
*Engines which index documents for search and analysis.*

* [Elasticsearch .NET](https://github.com/elastic/elasticsearch-net) - Elasticsearch.Net & NEST
* [PlainElastic.Net](https://github.com/Yegoroff/PlainElastic.Net) - Plain .Net client for ElasticSearch
* [SolrNet](https://github.com/mausch/SolrNet) - Solr client for .Net
* [SolrExpress](https://github.com/solr-express/solr-express)) - A simple and lightweight query .NET library for Solr, in a controlled, buildable and fail fast way
* [Lucene.net](http://lucenenet.apache.org/) - Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users
* [chewy](https://github.com/toptal/chewy) - High-level Elasticsearch Ruby framework based on the official elasticsearch-ruby client.
* [elasticsearch-ruby](https://github.com/elastic/elasticsearch-ruby) - Ruby integrations for Elasticsearch.
* [elastics](https://github.com/printercu/elastics-rb) - Simple ElasticSearch client with support for migrations and ActiveRecord integration.
* [has_scope](https://github.com/plataformatec/has_scope) - Has scope allows you to easily create controller filters based on your resources named scopes.
* [Mongoid Search](https://github.com/mauriciozaffari/mongoid_search) - Simple full text search implementation for Mongoid.
* [pg_search](https://github.com/Casecommons/pg_search) - Builds ActiveRecord named scopes that take advantage of PostgreSQL's full text search.
* [ransack](https://github.com/activerecord-hackery/ransack/) - Object-based searching.
* [Rroonga](https://github.com/ranguba/rroonga) - The Ruby bindings of Groonga.
* [scoped_search](https://github.com/wvanbergen/scoped_search) - Adds a scope supporting search queries and autocompletion against existing fields on ActiveRecord models and associations.
* [SearchCop](https://github.com/mrkamel/search_cop) - Extends your ActiveRecord models to support fulltext search engine like queries via simple query strings and hash-based queries.
* [Searchkick](https://github.com/ankane/searchkick) - Searchkick learns what your users are looking for. As more people search, it gets smarter and the results get better. It’s friendly for developers - and magical for your users.
* [Searchlogic](https://github.com/binarylogic/searchlogic) - Object based searching, common named scopes, and other useful named scope tools for ActiveRecord.
* [Sunspot](https://github.com/sunspot/sunspot) - A Ruby library for expressive, powerful interaction with the Solr search engine.
* [textacular](https://github.com/textacular/textacular) - Exposes full text search capabilities from PostgreSQL, and allows you to declare full text indexes. Textacular extends ActiveRecord with named_scope methods making searching easy and fun!
* [Thinking Sphinx](https://github.com/pat/thinking-sphinx) - A library for connecting ActiveRecord to the Sphinx full-text search tool.
* [Elastica](https://github.com/ruflin/Elastica) - A client library for ElasticSearch.
* [ElasticSearch PHP](https://github.com/elastic/elasticsearch-php) - The official client library for [ElasticSearch](https://www.elastic.co/).
* [Solarium](http://www.solarium-project.org/) - A client library for [Solr](http://lucene.apache.org/solr/).
* [Sphinx Search](https://github.com/ripaclub/sphinxsearch) - Sphinx Search library provides SphinxQL indexing and searching features
* [SphinxQL query builder](http://foolcode.github.io/SphinxQL-Query-Builder/) - A query library for the [Sphinx](http://sphinxsearch.com/) search engine.
* [Apache Lucene](https://lucene.apache.org/) - High-performance, full-featured cross-platform text search engine library.
* [Apache Solr](http://lucene.apache.org/solr/) - Enterprise search engine optimized for high volume traffic.
* [Elasticsearch](https://www.elastic.co/) - Distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.