| Acta | | European firm manufacturing hydrogen, alcohol, ethanol and methanol fuel cell batteries. Company presentation and details of the technology. |
| Acumentrics Corporation | | Develops and markets solid oxide fuel cell systems for power backup and distributed power generation. Company profile, product information, and technology overview. |
| Agni Inc. | | Developer of methane reforming fuel processors, PEM fuel stacks, and integrated solutions. Overview of technologies, markets, and opportunities. |
| Alca Torda Applications | | Company in France specializing in marine and off-shore fuel cell systems, for auxiliary power and propulsion. |
| Apollo Energy System | | Company specializing in alkaline fuel cell technology, derived from ammonia. Company profile, history, management, patents, publications and product catalog. |
| Cellkraft | | A Swedish firm which develops, manufactures and markets PEM fuel cells for back-up and niche applications. Company profile and products. |
| CMR Fuel Cells Limited | | UK developer of compact mixed reactant fuel cell stacks for portable and small stationary power generation applications. |
| E-Tek | | Manufacturer of membrane electrode assemblies and gas diffusion electrodes for various electrochemical processes, offering products from a standard catalog as well as customization services. |
| Fuel Cell Stocks | | News and education about fuel cells and the hydrogen economy. Analysis and directory of publicly traded fuel cell manufacturers and hydrogen producers. |
| Fuel Cells America | | Consulting service and commissioned fuel cell sales company, focusing on the Wisconsin area. Overview of market and applications. |
| Fuel Cells Canada | | Supports corporations, educational institutions and business alliances that develop and promote fuel cell technology, products and services. |
| FuelCell Energy, Inc. | | Develops and markets carbonate fuel cell and advanced nickel zinc secondary battery. (Nasdaq: FCEL). |
| HTceramix SA | | Swiss developer and producer of solid oxide fuel cell stacks for use with hydrogen or reformate gas. Also offers oxygen-selective ceramic membranes. |
| IdaTech | | Develops technology to extract and separate hydrogen from fuels, and integrated PEM fuel cell systems. Includes technology overview, list of publications, and a glossary. |
| Medis Technologies | | Develops and produces borohydride-operated fuel cell technology for portable electronic devices, as well as cell-based medical diagnostic equipment. Currently offers disposable and refuelable power pack products. |
| Mesoscopic Devices, LLC | | Designs, fabricates and integrates portable fuel cell generators for military and industrial applications. Pumps and heat exchangers. Specializing in components for miniature fuel cells. |
| MTU CFC Solutions | | Develops and manufactures stationary carbonate fuel cells for generating power and heat. Overview of technology, applications, and demonstration projects. Located in Germany. |
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