Arizona Hydrogen - Manufacture a range of gas generators for the production of hydrogen and oxygen .

PEM Fuel cells - Renewable and Hydrogen Energy and fuel cell Technology Product Showcase

ONSI Corporation - ONSI Corporation manufactures, markets and supports of fuel cells for stationary power, including the PC25 power plant. ONSI Corporation is a subsidiary of United Technologies Corporation (UTX).

California Hydrogen Business Council - Harnessing the Power of Hydrogen For the Future of Mankind.

Proton Energy Systems Inc. - Manufacturer of proton exchange membrane (PEM) electrolyzers and fuel cell products.

EPOCH Machine Enterprise Co., Ltd. - Manufacturer of oxy-hydrogen generators, solar ultraviolet heaters.

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).

The Hydrogen & Fuel Cell Investor - Hydrogen, fuel cells, and investing in an emerging technology. Links to the information available on the Internet.

Ztek Corp. - Zirconverter®, 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, as well as for environmental and chemical industries.

Stuart Energy Systems - Provides onsite water electrolyzers, which use alkaline electrolysis to supply hydrogen for transportation, industrial and regenerative power applications.

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

PowerNova Technologies Corporation - Develops and commercializes hydrogen production technology for fuel cells.

Norsk Hydro Electrolysers - Manufacture of alkaline electrolysis hydrogen generators, based in Norway.

Hydrogen Ventures - Financing hydrogen and new energy technologies

HydrogenSource -- Fuel processing for fuel cells - Manufacturer of natural gas, gasoline and other hydrocarbon reformers which produce hydrogen.

HSSSI Electrolyzers - Design and manufacture of electrochemical cells using proton exchange membrane technology. Qualified for use at 3,000 psi on board U.S. Nuclear submarines and are in operational use aboard Royal Navy nuclear submarines.

General Hydrogen - Develops technologies and invests in companies for hydrogen infrastructure.

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.

Elettronica Todescato - Production generators of hydrogen and oxygen from water - Production generators of hydrogen and oxygen that produce the two gases with the solo use of electric energy and water.