Clever
- A city vehicle for two people with a width less than one metre and very low fuel consumption (using compressed natural gas), designed by a European consortium and funded by the European Union Commission. Designs, technology, marketing analysis, partners a
- http://www.clever-project.net/

International Association for Natural Gas Vehicles (IANGV)
- Provides a focus for exchange and provision of information, and a medium for action on NGV issues of an international nature. Includes statistics, standards, conferences and issues.
- http://www.iangv.org

NGV Network
- News and information for the natural gas vehicle (NGV) industry worldwide. Coverage includes compressed natural gas (CNG), liquefied natural gas (LNG) and hydrogen vehicles.
- http://www.ngvnetwork.com

Clean Energy Fuels Corp
- Provider of natural gas for transportation in north America. Includes list of natural gas fueling stations.
- http://www.cleanenergyfuels.com/

California Natural Gas Vehicle Coalition (CNGVC)
- Non profit corporation sponsored by dedicated to promoting the use of natural gas vehicles, expanding California's infrastructure of natural gas fueling stations, and increasing the availability of natural gas vehicle to the public.
- http://www.cngvc.org

Impco Technologies, Inc.
- A leading designer, manufacturer, and supplier of advanced fuel storage, fuel delivery, and electronic control systems that allow internal combustion engines and fuel cells to operate using clean fuels such as hydrogen,propane, natural gas, and methanol.
- http://www.impco.ws/

Southern California Gas Co.
- Natural Gas Vehicle information: program details, services, fueling stations, questions.
- http://www.socalgas.com

Trillium USA, Inc.
- Compressed Natural Gas (CNG) fueling for vehicles and fleets considering alternative fuels: designs, builds, operates CNG facilities for public and private fleets.
- http://www.trilliumusa.com/

Pinnacle CNG Systems, LLC
- Full service contract Compressed Natural Gas (CNG) alternative fuel provider with fleet data management, compressors, dispensers, gas dryers.
- http://www.pinnaclecng.com/

Hendrix Industrial Gastrux
- Propane and natural gas conversion service, kits, and parts, including carburetors, regulators, auto, forklift and small engines.
- http://www.hendrixsystems.com

Clean Car Maps
- Alternative vehicle fueling maps. Includes database of fueling locations with driving directions in California.
- http://www.cleancarmaps.com/

Natural Gas Vehicle Coalition
- Association with purpose of promoting the use of natural gas vehicles. Addresses lobbying and advocacy, and technological background.
- http://www.ngvc.org

CleanBurbank.com
- Information about alternative fuel vehicles in use in the City of Burbank, California and its city-operated fueling stations.
- http://www.cleanburbank.com