ASPSeek
- Indexes as many as a few million URLs and searches for words and phrases. Uses wildcards and Boolean operators. SWSoft released ASPSeek under the GNU GPL.
Alkaline Search Engine - An Internet/intranet search engine, free for non-commercial sites and available for Windows NT, Linux, Solaris, IRIX, FreeBSDI and BSDI. By Vestris Inc.
ASTAware SearchKey PRO - Indexing, search and retrieval of data residing on Internet and intranet servers, with support for multiple file formats and European languages. Together with ASTAware SearchDisc, offers a solution for simultaneous online and CD searching.
Atrise Everyfind - Design a search engine for your web site, intranet, CD, DVD or any portable documentation.
CareerCast - Develops web-based job and resume search software for career, newspaper and employer sites.
The Clever Project - Incorporates several algorithms that make use of hyperlink structure for discovering information on the Web.
dtSearch - High-volume text search works with many file types. Features include hit highlighting, natural language, fuzzy, phonic, Boolean, proximity, field, numeric range.
Emerge - NCSA Information Technologies' effort to build a new search infrastructure that addresses issues of scale and heterogeneity.
Estraier - A full-text search engine for Japanese or English text.
F3DSearch - Software to make topic-specific searches by creating and maintaining a hybrid search engine-directory with a link-indexer.
Findmaan - A search engine developed on MySQL and PHP, and distributed under the GPL.
focuseek searchbox - High performance, multi platform full-text search engine, spiders web or intranet sites, or indexes data you feed to it. Easily scriptable via a SOAP/REST API. Also supports a variety of input formats.
freeWAIS-sf FAQ - Frequently Asked Questions [FAQ] with answers for freeWAIS, a text retrieval system.
Funnelback - Enterprise search engine with advanced text and metadata capabilities.
Harvest - Free GPL-licensed distributed search system to collect files of many different formats and make the information searchable using a web interface
HITS web search - Jon Kleinberg's method of searching the Web. Links to the Cornell researcher's online publications list.
Hosted Site Search - FusionBot search engine, a remotely hosted search service.
ht://Dig - A complete indexing and searching system for a small domain or intranet. Source code provided under the GPL.
IB 2.0 WebCat - IB 2.0 is the commercial "big brother" of the public Isearch package.
IBM Intelligent Miner - Identifies and extracts business intelligence from your data assets.
Infoglide Software - Similarity Search Engine finds similarities and relationships between data in databases.
Inktomi Search Engine - Service provides searching in hosted clusters for specific domains and web sites.
Innerprise - Scalable search engine software for corporate web sites and intranets.
InTEXT WebSearch - Windows/Unix server search engine, includes natural-language querying and document summarization.
Java Search Engine - Search engine written in Java supports XML, XSLT and EJB.
Kscripts Web Site Indexer Search - Perl script indexes and allows Boolean searching. Suitable for indexing up to approximately 4,000 pages.
LinkSearch - Search engine that makes use of hypertext links and paths to provide rankings. Open source project under the GPL.
Managing Gigabytes - Book about indexing techniques and a software package that implements the algorithms.
MnoGoSearch - Search engine software for Internet and Intranet sites. The index can be stored in any of the popular SQL Databases.
Mondosoft - Offers analytics tools to manage content based on behavior. Mondosoft site search engine, reporting and optimization for Web environments.
Open Objects Software - Open Objects Software is the UK integrator for Inktomi Search Software.
Perlfect Search - Free web site indexer and search engine suite. Includes automatic installation tool, meta tag searching, paginated results, relevance ranking and keyword weighting.
RightHere.net - Provides audio and Internet-based locator software services for banks, restaurants, retail outlets, and manufacturers.
Search Engine - Perl-based software that allows visitors to search your site.
Simiax - Provides tools to build and maintain portals.
Suntek Chinese Search Engine - Chinese and English search engine for web sites and intranets. Available for embedding on CDs. Chinese-enabled content management system supports full text and field search in addition to workflow and publication management.
SWISH++ - Unix-based file indexing and searching engine based on SWISH-E. SWISH++ is a complete rewrite developed to circumvent difficulties with the SWISH-E package.
SWISH-E - Search engine for Unix and Windows NT that handles meta tags. Free and open-source under the GNU public license.
TxSearch - Database indexing and searching. Integrates with IIS and Apache and supports ASP and PHP.
Ultra Search - Provides uniform search-and-locate capabilities over multiple repositories, multiple Oracle databases, IMAP mail servers, HTML documents on a web server, or files on disk.
Verticrawl - An Internet search engine and bot that craws web sites and intranets for multiple-format indexing.
Voltix - A J2EE-based enterprise search solution. It can search through both structured and unstructured content including relational databases.
WebGlimpse - Finds information in a related web of pages. Collects and indexes pages based on traversal of links or subdirectories. Create a context-sensitive search by category by linking to relevant pages.
Webinator - Web walking and indexing package to create a retrieval interface to collections of HTML documents. Free for up to 2,000 pages.
YourAmigo - Search engine that uses a server-based agent to seek all URLs on a site, including dynamic pages from databases. Includes a function to keep searches current.
Zoom Search Engine - Free search engine software for your web site or intranet, with documentation and no advertising or dependency on external sites. PHP or ASP is required for the search front-end.