Halcyon Systems
- Irish software and services company, offering development, systems integration, outsourcing, ERP and e-business solutions.
- http://www.halcyon.ie/

Hadleigh Marshall International
- Specializing in knowledge management solutions using Lotus Domino.Doc. Also provides training for Domino.Doc. Based in the UK.
- http://www.hmi.co.uk/

The Harbour Group
- A full service consultancy that offers analysis, design, construction and implementation of technology based solutions.
- http://www.theharbourgrp.com

Huon Associates Pty Ltd
- Offers information technology consulting services.
- http://www.huonassociates.com

Horizon Computer Solutions Ltd.
- UK based company providing IT consulting and support services. Includes services and contacts.
- http://www.horizon-computers.co.uk/

Handsome Dog Consulting Group
- Provides systems and management consulting services focusing on emerging technologies.
- http://www.handsomedog.com

HITCON
- Specializes in performance test tools and performance monitoring applications.
- http://www.hitcon.dk

Harbinger Partners
- Consulting firm focused on e-business and technology services.
- http://www.harbinger-partners.com

Hermes Computers
- Provides online computer help 24/7 services such as fix computer problems, kill viruses, speed computer, remove spyware, and eliminate computer crashes.
- http://www.hermes-computers.ca

Hubbard Decision Research
- Specializes in Applied Information Economics, the practical application of scientific and mathematical methods to the Information Technology investment process.
- http://www.hubbardresearch.com

The Hunter Management Group (HMG)
- Global consulting organization specializing in IT business strategy, leadership, performance improvement and organizational change.
- http://www.hmgstrategy.com

Harrison Consulting, Inc.
- Full service information technology consultants.
- http://www.hconsulting.com/products.html

Human Systems Development
- Professionals in systems engineering, information systems, human factors engineering, and management consulting.
- http://www.humsysdev.com/