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Splainer - Solr Sandbox for exploring explain information and tweaking
Splainer is the sandbox that explains your search results for you so you don't have to go digging through explain debug. Splainer is different by being a sandbox. Paste in your Solr URL, query parameters and all. As you work with your query, changing parameters, Splainer shows you parsed and summarized explain information alongside your documents.
Carrot2 is an Open Source Search Results Clustering Engine. It could cluster the search results from various sources and generates small collection of documents. Carrot2 offers ready-to-use components for fetching search results from various sources including YahooAPI, GoogleAPI, Bing API, eTools Meta Search, Lucene, SOLR, Google Desktop and more.
The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources that support research and development of information retrieval and text mining software. The project is best known for its Indri search engine, Lemur Toolbar, and ClueWeb09 dataset.
Hue is a Web application for interacting with Apache Hadoop. It supports a FileBrowser for accessing HDFS, JobBrowser for accessing MapReduce jobs (MR1/MR2-YARN), Job Designer for creating MapReduce/Streaming/Java jobs, HBase Browser for exploring and modifying HBase tables and data, Oozie App for submitting and scheduling workflows and bundles, A Pig/HBase/Sqoop2 shell, Beeswax application for executing Hive queries, Search app for querying Solr and Solr Cloud.
Spyglass provides a simple search interface for Solr using EmberJS. Searchers that return a result from a given Solr url. Result Sets that automatically show the results returned by their searchers, and Facets which toggle search parameters.
Blacklight is an open source OPAC (online public access catalog). It is ruby-on-rails based discovery interface (a.k.a. “next-generation catalog”) especially optimized for heterogeneous collections. It could be used as a library catalog, as a front end for a digital repository, or as a single-search interface to aggregate digital content that would otherwise be siloed. Blacklight uses Solr, an enterprise-scale index for its search engine.
Zebra is a high-performance, general-purpose structured text indexing and retrieval engine. It can index records in XML/SGML, MARC, e-mail archives and many other formats and allows access to them through exact boolean search expressions and relevance-ranked free-text queries.
Lux is an open source XML search engine using Lucene /Solr and Saxon XQuery/XSLT processor. Lux provides XML-aware indexing, an XQuery 1.0 optimizer that rewrites queries to use the indexes, and a function library for interacting with Lucene via XQuery. These capabilities are tightly integrated with Solr, and leverage its application framework in order to deliver a REST service, application server, and supporting tools.
Hydra is designed to give the search solution the tools necessary to modify the data that is to be indexed in an efficient and flexible way. This is done by providing a scalable and efficient pipeline which the documents will have to pass through before being indexed into the search engine. Architecturally Hydra sits in between the search engine and the source integration.