Google Search Solutions
- Hosted search options and a search hardware product.
- http://bizsolutions.google.com/services/

MnoGoSearch
- Search engine software for Internet and Intranet sites. The index can be stored in any of the popular SQL Databases.
- http://www.mnogosearch.org/

Funnelback
- Enterprise search engine with advanced text and metadata capabilities.
- http://funnelback.com/

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.
- http://swishplusplus.sourceforge.net/

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.
- http://alkaline.vestris.com/

Estraier
- A full-text search engine for Japanese or English text.
- http://estraier.sourceforge.net/

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.
- http://www.wrensoft.com/zoom/

Datalink linkSearch search engine software
- linkSearch is search engine software capable of indexing pdf-, office-, html- and flash-documents. Handles dynamic and static sites, intranets, local nets and is very easy to deploy.
- http://www.datalink.se/se/index.html?content=linksearch_en.html

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.
- http://www.focuseek.com/

Namazu: a Full-Text Search Engine
- Namazu is a full-text search system. Not only does it work as a small or medium scale web search engine, but also as a personal search system for email or other files.
- http://www.namazu.org/

Voltix
- A J2EE-based enterprise search solution. It can search through both structured and unstructured content including relational databases.
- http://www.voltix.com

RightHere.net
- Provides audio and Internet-based locator software services for banks, restaurants, retail outlets, and manufacturers.
- http://www.righthere.net

Harvest
- Free GPL-licensed distributed search system to collect files of many different formats and make the information searchable using a web interface
- http://harvest.sourceforge.net/

TxSearch
- Database indexing and searching. Integrates with IIS and Apache and supports ASP and PHP.
- http://pages.sbcglobal.net/wpilcher50/

YourAmigo
- Search engine that uses a server-based agent to seek all URLs on a site, including dynamic pages from databases. Includes an function to keep searches current.
- http://www.youramigo.com

TeraText Database System
- Text management product for storing, indexing, retrieving and delivering documents or XML records (stored natively).
- http://www.teratext.com/get/page/browser/browser?category=Products/TeraText%20DBS

InTEXT WebSearch
- Windows/Unix server search engine, includes natural-language querying and document summarization.
- http://intext.com/

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.
- http://otn.oracle.com/products/ultrasearch/content.html

Java Search Engine
- Search engine written in Java supports XML, XSLT and EJB.
- http://www.me.lv/jse/

Verticrawl
- An Internet search engine and bot that craws web sites and intranets for multiple-format indexing.
- http://www.verticrawl.com/

S.L.I. Systems Learning Search System
- A scalable search that learns from your users and adapts, provides search suggestions, and extensive reporting.
- http://www.sli-systems.com/

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.
- http://www.suntek.com.hk

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 comprehensive solution for simultaneous online and CD searching.
- http://www.astaware.com/new_pro.html

Open Objects Software
- Open Objects Software is the UK integrator for Inktomi Search Software.
- http://www.openobjects.com

F3DSearch
- Software to make topic-specific searches by creating and maintaining a hybrid search engine-directory with a link-indexer.
- http://www.simiax.com/f3dsearch.html

CareerCast
- Develops web-based job and resume search software for career, newspaper and employer sites.
- http://www.careercast.com

Search Engine
- Perl-based software that allows visitors to search your site.
- http://www.interactivetools.com/products/searchengine/

Findmaan
- A search engine developed on MySQL and PHP, and distributed under the GPL.
- http://findmaan.sourceforge.net/

Atrise Everyfind
- Design a search engine for your web site, intranet, CD, DVD or any portable documentation.
- http://www.atrise.com/everyfind/

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.
- http://webglimpse.net/

Hosted Site Search
- FusionBot search engine, a remotely hosted search service.
- http://vertical-search.fusionbot.com

Kscripts Web Site Indexer Search
- Perl script indexes and allows Boolean searching. Suitable for indexing up to approximately 4,000 pages.
- http://kscripts.com

Fluid Dynamics Search Engine
- Written in Perl. Online-manageable with a web browser.
- http://www.xav.com/scripts/search/

Innerprise
- Scalable search engine software for corporate web sites and intranets.
- http://www.innerprise.net

LinkSearch
- Search engine that makes use of hypertext links and paths to provide rankings. Open source project under the GPL.
- http://linksearch.sourceforge.net

Portal Juice
- Provides backend search engine services to micro and vertical niche market portals.
- http://www.portaljuice.com/

Perlfect Search
- Free web site indexer and search engine suite. Includes automatic installation tool, meta tag searching, paginated results, relevance ranking and keyword weighting.
- http://www.perlfect.com/freescripts/search/

The Clever Project
- Incorporates several algorithms that make use of hyperlink structure for discovering information on the Web.
- http://www.almaden.ibm.com/cs/k53/clever.html

Thunderstone
- Provides SQL-based relational full-text retrieval, dynamic publishing, object management, and web-indexing software.
- http://www.thunderstone.com/

Mondosoft
- Offers analytics tools to manage content based on behavior. Mondosoft site search engine, reporting and optimization for Web environments.
- http://www.mondosoft.com/

IB 2.0 WebCat
- IB 2.0 is the commercial "big brother" of the public Isearch package.
- http://www.bsn.com/Z39.50/WebCat.html

freeWAIS-sf FAQ
- Frequently Asked Questions [FAQ] with answers for freeWAIS, a text retrieval system.
- http://www.faqs.org/faqs/wais-faq/freeWAIS-sf/

Infoglide Software
- Similarity Search Engine finds similarities and relationships between data in databases.
- http://www.infoglide.com/

Webinator
- Web walking and indexing package to create a retrieval interface to collections of HTML documents. Free for up to 2,000 pages.
- http://www.thunderstone.com/webinator/

IBM Intelligent Miner
- Identifies and extracts business intelligence from your data assets.
- http://www.software.ibm.com/data/iminer/

SWISH-E
- Search engine for Unix and Windows NT that handles meta tags. Free and open-source under the GNU public license.
- http://sunsite.berkeley.edu/SWISH-E/

HITS web search
- Jon Kleinberg's method of searching the Web. Links to the Cornell researcher's extensive online publications list.
- http://www.news.cornell.edu/releases/April98/websearch.bs.html

Emerge
- NCSA Information Technologies' effort to build a new search infrastructure that addresses issues of scale and heterogeneity.
- http://emerge.ncsa.uiuc.edu/

dtSearch
- High-volume text search works with many file types. Features include hit highlighting, natural language, fuzzy, phonic, Boolean, proximity, field, numeric range.
- http://www.dtsearch.co.uk

Managing Gigabytes
- Book about indexing techniques and a software package that implements the algorithms.
- http://www.cs.waikato.ac.nz/~ihw/mg.html

Inktomi Search Engine
- Service provides searching in hosted clusters for specific domains and web sites.
- http://www.inktomi.com/products/search/index.html

Simiax
- Provides tools to build and maintain portals.
- http://www.simiax.com/

ht://Dig
- A complete indexing and searching system for a small domain or intranet. Source code provided under the GPL.
- http://www.htdig.org/