BreastCancer.org Forum
A discussion board to share thoughts and experiences on clinical trials, study results, and breast cancer news.
http://community.breastcancer.org/forum/73

BreastCancerTrials.org
Provides help determining what types of trials are best for each person.
https://www.breastcancertrials.org/bct_nation/home.seam

National Breast Cancer Foundation
Explains the differences between the types of clinical trials and how they compare to standard treatments.
http://www.nationalbreastcancer.org/breast-cancer-clinical-trials

National Cancer Institute
A searchable database of breast cancer clinical trials.
http://www.cancer.gov/clinicaltrials/search

U.S. National Institutes of Health
This database lists studies/clinical trials on breast cancer and their status.
http://clinicaltrials.gov/ct/search?term=breast+cancer