Isearch Software for indexing and searching text documents, using full text and field based search, relevance ranked results, Boolean queries, and heterogeneous databases. Support for document types such as HTML, SGML, mail folders, and USMARC. http://www.etymon.com/Isearch/

Megaputer Intelligence Megaputer provides a complete family of unique solutions for Natural Language Text Retrieval and Analysis, Data Mining and Knowledge Discovery in Databases. http://www.megaputer.com

ht://Dig A complete world wide web indexing and searching system for a small domain or intranet. Source code (GPL). http://www.htdig.org/

Ultraseek Server The tools they use at their site for sale. Demo version available for download. http://software.infoseek.com/products/ultraseek/ultratop.htm

Zebra Z39.50 Search Engine Zebra is a fulltext and free-text indexing and retrieval system that conforms to ANSI standard Z39.50. It is very good for indexing and searching highly structured data such as MARC records, and GILS records. The Zebra server is freely available for noncommercial applications. http://www.indexdata.dk/zebra

Thunderstone Software Thunderstone has a number of full text search related products including their flagship text/relational database, Texis. http://www.thunderstone.com/

Dataware Technologies Search engine vendor of BRS/Search, a text based core product, and web enabled products. http://www.dataware.com

Managing Gigabytes Information and select sections of a book about indexing and compression techniques for documents and images. Also provides information about open source IR system released with the book. http://www.cs.mu.oz.au/mg/

OpenText Supplier of information retrieval and collaborative software. http://www.opentext.com

Glimpse A Unix based indexing and query system. It is good for indexing relatively small amounts of data. Different types of indexes allow you to trade off search speed for index size. The default search engine used in Harvest. http://glimpse.cs.arizona.edu/

WinOcular Document Imaging Combined Computer Resources, Inc. (CCR), a software developer and integrator, specializes in customizing and integrating document imaging, COLD report management and workflow software products. http://www.winocular.com/

ClusterClick Full-text indexing of desktop documents for researchers, journalists, and historians with low indexing overhead 13 percent beyond document space. Also displays the most important words from each document. [Windows 95/98] http://www.clusterclick.com/

SimpleScan Software, Inc. SimpleScan Software, Inc - providing powerful, cost effective, enterprise wide document management software solutions. http://www.SimpleScan.com

Inventory of Full-Text Information Retrieval Software Vendors A project of the IFLA Section on Information Technology http://www.ifla.org/VII/s21/p1996/fulltext.htm

IB Search Engine High speed, fully featured, multilingual fielded fulltext engine. Available for many platforms including Solaris, BSD, Linux and Windows-NT. http://www.bsn.com/Z39.50

Building Task-Specific Interfaces to High Volume Conversational Data A scholarly paper by Loren G. Terveen, William C. Hill, Brian Amento, David McDonald, and Josh Creter. http://www.acm.org/sigchi/chi97/proceedings/paper/lgt.htm

dtSearch Searches all popular file types, with features including hit highlighting, natural language, fuzzy, phonic, boolean, proximity, field, numeric range. http://www.dtsearch.com/

LegalProNet.Com A secure web based service, allowing attorneys to store, manage, search and access their documents through the internet. http://www.LegalProNet.com

Web Search Engine Software Create and maintain your own search engine quickly and easily using our perl script and database management tool. http://www.web-search.com/websoft.html

SearchExpress Provides document scanning, optical character recognition and full-text searching. http://www.searchexpress.com/