Knowledge Navigation Suite  
   A suite of information indexing and classification tools that supports information sharing and textual data mining based on natural language processing, statistical pattern analysis, and neural networks techniques. Supports large-scale terabyte data analy
   http://www.knowledgecc.com/

Center for Networked Information Discovery and Retrieval  
   Information on the team, history and projects of this research lab.
   http://www.cnidr.org/

Willow  
   A now discontinued Z39.50 bibliographic information retrieval tool from University of Washington.
   http://www.washington.edu/willow/home.html

The Glasgow Information Retrieval Group  
   Has a research program aimed at giving better access to multi-media information.
   http://ir.dcs.gla.ac.uk/

Information Retrieval  
   An online book by C. J. Rijsbergen, University of Glasgow
   http://www.dcs.gla.ac.uk/Keith/Preface.html

Text REtrieval Conference (TREC)  
   An annual information retrieval conference and competition, the purpose of which is to support and further research within the information retrieval community.
   http://trec.nist.gov/

The Center for Intelligent Information Retrieval  
   University of Massachusetts research lab focused on efficient access to large, heterogeneous, distributed, text and multimedia databases.
   http://ciir.cs.umass.edu/

MultiCentrix  
   Software for information mapping, knowledge management, and computer aided thinking.
   http://www.multicentric.com/

The unCommon Hub  
   A suite of components, that when connected and utilized in concert with one another provide you with a powerful information management and data integration tool.
   http://www.imageers.com

Information Retrieval Research  
   An up-to-date overview of research in the field of information retrieval.
   http://www.searchtools.com/info/info-retrieval.html

Information Filtering Resources  
   A comprehensive directory of online resources in information filtering, maintained at the University of Maryland.
   http://www.ee.umd.edu/medlab/filter/filter.html

Modern Information Retrieval  
   A recent IR book, covering algorithms, implementation, query languages, user interfaces, and multimedia and web retrieval.
   http://www.sims.berkeley.edu/~hearst/irbook/

AgentWeb: Information Retrieval and Knowledge Management  
   IR and KM resources specifically relating to intelligent software agents. Includes a wide variety of web resources with good descriptions.
   http://agents.umbc.edu/Topics/Related_Topics/Information_retrieval_and_knowledge_management/index.shtml

Resources for Text, Speech and Language Processing  
   A collection of resources in a variety of fields related to text, speech and language processing. These include computational linguistics, information retrieval and machine learning. Here you can find pointers to useful Web sites, as well as lists of rele
   http://www.cs.technion.ac.il/~gabr/resources/resources.html

Arcessa  
   Develops large-scale information retrieval systems. Features general company information and overviews of markets and products.
   http://www.arcessa.com/

Javaisis 3.0  
   JavaIsis is an open source Java application by which you can manage a CDS/ISIS database with any Java Virtual Machine.
   http://web.tiscali.it/javaisis/

Index Data  
   Offers courses, software solutions, consultancy aid, and support, relating to Z39.50, Dublin Core, Metadata, and XML.
   http://www.indexdata.dk/

Clairvoyance Corporation  
   Develops a suite of component technologies for unstructured text management and analysis. Features overviews of technologies and reseach initiatives, with company background.
   http://www.clairvoyancecorp.com/

Information Retrieval Software  
   Directory of search engines and software, links to web sites, and online publications on information retrieval.
   http://www.ir-ware.biz/

Delphes Technologies International  
   Publisher of information retrieval software for personal and corporate knowledge management using natural language technology under the brand name Diogene.
   http://www.delphes.com/portal.asp?Language=en

Extensio  
   An information integration solution. It makes information from ERP implementations, CRM databases, custom applications, EAI and EIP solutions and the Internet, available on request.
   http://www.extensio.com/