Aruna Solutions, Inc.
Aruna Companion unifies disparate business data, and provides a platform for ad-hoc queries.
http://www.arunasolutions.com/

Kinor Technologies
Kinor EII software takes data from disparate systems and aggregrates it into a knowledge grid.
http://www.kinor.com/

MetaMatrix, Inc.
Provides a software solution designed to logically integrate all of the information assets of the enterprise.
http://www.metamatrix.com/

GemStone Systems, Inc
Provides enterprise data solutions, real-time data distribution, caching and management across the enterprise.
http://www.gemstone.com/

EII: Information on Demand
Intelligent Enterprise Magazine article by Rajan Chandras that asks the question, "Will enterprise information integration really displace traditional data warehousing, or just complement it?"
http://www.intelligententerprise.com/showArticle.jhtml?articleID=57702700

EII - does it have a chance to survive?
Weblog entry from Dan Linstedt wondering if EII is just a passing fad or a long term surviving architecture.
http://www.b-eye-network.com/blogs/linstedt/archives/2005/07/eii_-_does_it_h.php

Composite Software
Provides EII solutions to connect users and applications to business information from disparate systems.
http://www.compositesw.com/

EII: Dead on Arrival
Intelligent Enterprise article by Andy Hayler that says the only problem with the 'EII for intelligence' approach is that it is absolutely and utterly flawed.
http://www.intelligententerprise.com/channels/integration/showArticle.jhtml?articleID=23901932

A New View on Intelligence
Intelligent Enterprise article by Tim Matthews that says given the growth of XML and the advantages of EII, more companies will change their view of on-demand intelligence.
http://www.intelligententerprise.com/channels/integration/showArticle.jhtml?articleID=23901013

Enterprise Information Integration: A New Definition
DM Review article by John (JT) Taylor that attempts to define EII.
http://www.dmreview.com/article_sub.cfm?articleId=1009669

Sybase Avaki EII
Streamlines integration of data from distributed sources while providing standardized access to integrated views of data through a single data layer.
http://www.sybase.com/products/developmentintegration/avakieii

Ipedo, Inc.
XIP is an EII product that integrates and manages information from disparate, complex data sources to enable real-time business decisions.
http://www.ipedo.com/

XAware, Inc.
Data integration and XML database Web services platform providing a way to create bi-directional cross application data conduits and web services.
http://www.xaware.com/

Infostoria Inc.
Provides an enterprise information integration system that lets people and applications manage, search, and securely share information.
http://www.infostoria.com/

Metatomix
Semantic web-based solutions for Enterprise Resource Interoperability (ERI).
http://www.metatomix.com/

Modus Operandi, Inc.
Provides semantic integration technology and services to address complex information integration projects.
http://www.modusoperandi.com/

EII: The Prototype for a Killer App?
Enterprise Systems article by Stephen Swoyer that suggests a potential use case for EII as a tool to help prototype the design or expansion of a data warehouse.
http://www.esj.com/business_intelligence/article.aspx?EditorialsID=8053

ADTMag: EII - The return of the virtual data warehouse?
Article by Wayne Eckerson. Like all good information technologies, virtual data warehouses never died. It is now re-emerging under a new guise and with a slightly new mission. Its new name: Enterprise Information Integration (EII).
http://www.adtmag.com/article.aspx?id=8152

DataSalon
Web-based solution to join up multiple databases, with search, list creation, reporting and analysis tools.
http://www.datasalon.com/

EII Technology: Architectures, Uses, and Abuses
Weblog entry from Mark Madsen containing slides on EII technology uses and abuses.
http://clickstream.blogspot.com/2007/08/slides-for-data-federationeii-uses-and.html