Sunspot is a library providing a powerful, all-ruby API for the Solr search engine. Sunspot manages the configuration of persistent Ruby classes for search and indexing and exposes Solr's most powerful features through a collection of DSLs. Complex search operations can be performed without hand-writing any boolean queries or building Solr parameters by hand.

Blacklight is an open source Solr user interface discovery platform. You can use Blacklight to enable searching and browsing of your collections. Blacklight uses the Apache Solr search engine to search full text and/or metadata.

ActiveFedora provides for creating and managing objects in the Fedora Repository Architecture.

Project Hydra Stack Dependencies

Fluentd input plugin to track insert/update/delete event from MySQL database server. Not only that, it could multiple table replication and generate nested document for Elasticsearch/Solr. It's comming support replicate to another RDB/noSQL.

The unofficial X-Ray Tracing SDK for Ruby.

A query/response extension lib for RSolr

Allows delimited Solr facets to become hierarchical trees in Blacklight.

A Ruby-on-Rails interface to Datastax Enterprise. Intended for use with the DSE search nodes.

Contains classes to register objects and initialize workflows

Active Record caching and indexing in memcache.

solrsan is a lightweight wrapper for using Apache Solr within a Ruby application including Rails and Sinatra.

Blacklight Advanced Search plugin

Load CONTENTdm data into a Solr Index. CDMBL expects to run inside a Rails application.

Fluent output plugin for sending data to Apache Solr.

Fiona Connector for Infopark CMS Fiona enables you to develop modern, dynamic web applications using Ruby on Rails and at the same time display CMS managed content.

Apache Solr JavaBin format (binary format) implementation for Ruby.

Shareable tools/components for building a digital collections app in Rails.

Ruby wrapper for the LucidWorks REST API

Easy manipulation of sets of ActiveRecord models