Here is a sampler of some of the search-specific software and services vendors.
ASG Software Solutions
Total Content Integrator (TCI)
Web search across repositories, file systems, databases and applications, including e-mail and SharePoint.
Semantic middleware for organizational search and classification.
Active Intelligence Engine
Integrate information from internal and external sources for Web portals, site search, discovery and data analysis.
"Pan-enterprise" search across company divisions, operating systems, language barriers and file types; FRCP compliant.
SharePoint Monitor provides real-time, graphical topology of the Microsoft SharePoint environment.
Extend the search capabilities of SharePoint Server and Microsoft Search Server.
Structured and unstructured data including e-mails, attachments, OCR’d images and PDFs.
Taxonomy and automatic document classification using "compound term processing."
Latent semantic indexing—search intelligence from the documents being indexed.
Coveo Enterprise Search
Access to e-mail, archives, CRM, support systems, intranet, enterprise systems, databases, Web and multimedia.
HTML content, documents and digital assets.
EMC Documentum Federated Search Services
Access to an unlimited number of information sources with a single query.
Information Access Platform
Structured MDEX Engine database and information transformation layer for content acquisition and enrichment.
CloudView Search Edition
E-mail, Web pages, Office documents, PDFs, database records, enterprise application data, audio, video, images.
Google Search Appliance; Google Mini
On-premise, relevant search for your intranet or website.
OmniFind Enterprise Edition
Find, analyze and mine unstructured information—regardless of storage location or format.
InQuira Intelligent Search
Linguistic techniques and contextual understanding of the intent behind a user’s query.
Built on .NET, single point of access to any file, any fileserver, any mail server, any application.
ISYS Search Software
Engine for database-driven applications—e-commerce, business process management, e-mail archiving and retention.
FAST Search for SharePoint
Combines search with the broad portal, collaboration, content management and business intelligence capabilities of SharePoint.
Targeted, industry-specific data repositories and subscription services that complement enterprise connectivity and search.
New Idea Engineering
Federated Search Framework
Distributes query to multiple engines, and then combines all the results into a single list of matches.
Discovery Server; Federated Query Server
For large quantities of dynamic, customized information; single access point to query multiple repositories.
Secure Enterprise Search
Websites, file servers, CMS, ERP, CRM, BI systems and database search.
Knowledge Management & Enterprise Portals
Search, categorization and classification including taxonomy and metadata strategy.
Automatically index, retrieve and categorize structured and unstructured information.
Open source enterprise search
SOLR/Lucerne-based semantic search, categorization and entity extraction.
Linguistic and semantic technology for intelligent decision making.
Intelligent Information Management Platform
E-discovery, information governance, records and storage management.
E-mail and content archiving across Exchange and Domino, SharePoint and Windows.
Velocity Enterprise Search Platform
Information access and knowledge sharing, discovery, personalization and collaboration.
ZyLAB North America
eDiscovery EDRM Bundle
Legal collection, culling, de-dupe, conversion of e-mail and attachments, ESI for discovery requests.