Many aspects of Elastic Search, through the REST interface, can be accessed by a simple URL. Here is an incomplete, but centralized list of some of the most common URL paths.
Solr is a fantastic search engine built on Lucene and used by thousands of a professional sites. Elastic Search is a new search engine built on the same library. Why choose Elastic over Solr?
The elasticsearch (http://www.elasticsearch.org/) is a search engine built atop the Lucene Search library. If you have a server that runs Java, setup and use is super easy.