Cloudman.Com
Cloud photos and charts, weather facts, and the history of Luke Howard, 18th century scientist who first developed the nomenclature for clouds.
http://www.cloudman.com/
Meteorlogix
Information to help actively manage weather-related risks for businesses.
http://www.meteorlogix.com/
Meteorologica
Supplying weather stations, handheld weather monitors and weather software throughout the UK and Europe
http://www.meteorologica.co.uk