Comprehensive information in the "Cancer Topics" section, and information on US clinical trials and support services. This is the website of the USA's National Cancer Institiute.
Cancerbackup is Europe's leading cancer information charity. Its website contains over 4,500 pages of up-to-date cancer information, practical advice and support for cancer patients, their families, carers and friends.
CancerCare provides free professional help to people with all cancers through counselling, education, information and referral and direct financial assistance. Based in the USA.