Affordable Light Therapy offers desk lamps, lightboxes, dawn simulators, books, and other therapeutic devices and information. http://www.lighttherapy.com/

Alaska Northern Lights Information and products for the treatment of SAD, PMS, sleep disorders, depression, and jet lag with bright light therapy boxes. http://www.alaskanorthernlights.com/

Alda Light Therapy sells LED instruments for photon energy absorbtion. http://www.aldalighttherapy.com/

Amjo Lights provides light boxes, lamps, and other products for treatment of SAD. http://www.sadlight.com/

Betterlite.com Distributor of Ott-Lite True Color products. http://www.betterlite.com/

Bio-Brite manufactures products that assist in coping with winter depression and sleep disorders. http://www.biobrite.com/

Enlightened Technologies Associates specializing in the development, production and sales of portable light therapy devices that address human circadian problems. http://www.etai.com/

Enviro-Med offering broad-spectrum systems. http://www.bio-light.com/

Full Spectrum Solutions Manufacturer of full spectrum lights and lamps. http://www.fullspectrumsolutions.com/

Health Light Inc. light therapy products for the treatment of seasonal affective disorder (SAD). http://www.healthlight.net/

Light Box Research Solutions Provides light therapy products to help alleviate the winter blues, seasonal depression, and sleep disorders. http://www.lightboxresearch.com/

Light Therapy Products offers light box, dawn simulator, light visor, books, and more for individuals suffering from seasonal affective disorder depression. http://www.lighttherapyproducts.com/

Light-Force-Therapy offers products that utilize LEDs to produce low-level infrared light which helps to elevate muscle tissue temperature and increase circulation. http://www.lightforcetherapy.com/

Mind Body Healing colored light therapy promotes health of mind, body and spirit as an alternative healing treatment or holistic medicine in Chinese medicine (Ayurveda healing). http://www.mindbodyhealing.com/

Morning StarLight offers a personal, private light screen which provides light therapy. http://www.morningstarlight.com/

Northern Light Technologies offering the SADelite, a portable desk lamp that yields 10,000 lux of diffuse light, used to treat seasonal affective disorder. http://www.northernlight-tech.com/

Outside In offers light therapy devices to treat seasonal affective disorder (SAD), jetlag, and other bodyclock related problems. http://www.outsidein.co.uk/

SunBox Company http://www.sunboxco.com/

Sunnex Biotechnologies offers low-intensity light therapy for SAD, winter weight gain, winter depression, PMS, and sleep disorders. http://www.sunnexbiotech.com/

Sunrise Simulator light therapy aid for: shift workers, SAD sufferers, jet lag and depression caused by winter blues. http://www.sunrisesimulator.com/