The Lemur Toolkit is an open-source toolkit designed to facilitate research in language modeling and information retrieval. Lemur supports a wide range of industrial and research language applications such as ad-hoc retrieval, site-search, and text mining.

SearchBlox is a content search software designed for vertical search, intranets, websites, portals and custom-applications. It is based on Lucene and Carrot2.

OpenPipeline is new open source software for crawling, parsing, analyzing and routing documents. It ties together otherwise incomplete solutions for enterprise search and document processing. OpenPipeline provides a common architecture for connectors to data sources, file filters, text analyzers and modules to distribute documents across a network. It includes a job scheduler and a full UI with a point-and-click interface.

Dieselpoint Search™ is search and navigation software for enterprise data including document collections, databases, and XML.

Endeca Information Access Platform is one of the leading enterprise search solution. With a strong bias on data analytics, it can be see as a new way to address business intelligence.