Hydrogen Systems N.V. : Hydrogen energy Custom-engineered hydrogen solutions. http://www.hydrogensystems.com

Arizona Hydrogen Manufactures a range of gas generators for the production of hydrogen and oxygen . http://www.azhydrogen.com/

California Hydrogen Business Council Offers hydrogen information with a slant on applications in California. http://www.ch2bc.org/

Proton Energy Systems Inc. Manufacturer of proton exchange membrane (PEM) electrolyzers and fuel cell products. http://www.protonenergy.com

International Fuel Cells Develops fuel cells and related fuel processing technologies for the transportation, stationary and portable markets. IFC fuel cells power plants provide power to the space shuttle orbiter fleet. IFC is a subsididary of United Technologies Corporation (UTX). http://www.internationalfuelcells.com

The Hydrogen & Fuel Cell Investor Hydrogen, fuel cells, and investing in an emerging technology. Links to the information available on the Internet. http://www.h2fc.com/

Ztek Corp. A planar type of solid oxide fuel cells (SOFC), is being developed and marketed for distributed and central utility electric generation, commercial cogeneration, space power applications and transportation. http://www.ztekcorp.com/

Stuart Energy Systems Provides onsite water electrolyzers, which use alkaline electrolysis to supply hydrogen for transportation, industrial and regenerative power applications. http://www.stuartenergy.com

Energy Consultants, LLP Offers business advisory services for harvesting revenue from fuel cell, hydrogen, wind power and other emerging energy or renewable energy technologies. http://energyllp.com

PowerNova Technologies Corporation Develops and commercializes hydrogen production technology for fuel cells. http://www.powernova.com

Hydrogen Ventures Financing hydrogen and new energy technologies http://www.hydrogen.la

HydrogenSource -- Fuel processing for fuel cells Manufacturer of natural gas, gasoline and other hydrocarbon reformers which produce hydrogen. http://www.hydrogensource.com

General Hydrogen Develops technologies and invests in companies for hydrogen infrastructure. http://www.generalhydrogen.com/php/index.php

Atomic Hydrogen Source The H-flux Atomic Hydrogen Source thermally dissociates hydrogen in an electron bombardment heated tungsten capillary. Used for surface science and thin film technology. http://www.tectra.de/hydrogen.htm

Elettronica Todescato Production generators of hydrogen and oxygen that produce the two gases with the solo use of electric energy and water. http://www.elettronicatodescato.com/todescato/index.asp

H2Gen Innovations Inc. Dedicated to developing, manufacturing and bringing to market low-cost, small-scale hydrogen generators for industrial applications and for the emerging fuel cell vehicle and distributed fuel cell power generation markets. http://www.h2gen.com/

Quantiam Technologies Inc. Focused on the development and commercialization of new products for the hydrogen economy as well as extreme materials applications in the aerospace, automotive and chemical process industries. http://www.quantiam.com/

Norsk Hydro Electrolysers Manufacture of alkaline electrolysis hydrogen generators, based in Norway. http://www.hydro.com/en/

Annual U.S. Hydrogen Conference Annual meeting of the National Hydrogen Association, covering many of the emerging research and developments in hydrogen technologies, such as fuel cells, storage, and hydrogen production. http://www.HydrogenConference.org/

Fuel Cell Markets Directory focusing on fuel cell technologies. http://www.fuelcellmarkets.com