Solr is the popular, blazing fast open source enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, rich document (Word, PDF, etc.) handling, and geospatial search. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites.
Markets are conversations. And today, increasingly communications-rich interactions within companies, and between companies and their stakeholders, are typically preserved and stored, creating ever larger reserves of documents and data. Effective access to a company's data can be a strategic advantage of potentially enormous value. Email, office documents, databases, customer service chat logs, content management systems, data types representing all forms of communications in the company and with its marketplace, continue to grow in electronic form. It's not just that the proverbial haystack is growing larger; it also has more types of hay, with many different types of needles to be found.
At some point, every function in the company needs access to such data, and these needs can vary significantly across organizations. Search technology can be a standalone system designed to provide a single point of access to the entirety of a company's data, irrespective of location, container format, or owner. Or, it may provide search functionality as a component within another application. But enabling employees, customers, partners, investors, and other stakeholders to find the information they need when they need it is the goal of any enterprise search solution, no matter where it will be deployed or how it will be used.
Lucene and Solr are state-of-the-art search technologies available for free as open source from The Apache Software Foundation. Lucene is a powerful search library; Solr provides a platform built on top of Lucene that makes it easy to build Lucene-based applications. Both incarnations are full-featured and have excellent performance, relevancy ranking and scalability. These technologies are used today by thousands of organizations. In many instances, Lucene/Solr solutions regularly index and search tens or hundreds of millions of documents with sub-second response time. Lucene and Solr power substantial and diverse search applications at AOL, CNET, Comcast Interactive Media, IBM, Netflix, LinkedIn, MySpace and many others.