- Centers for Disease Control and Prevention, National Prevention Information Network
(CDC NPIN) Collection of information and resources about HIV/AIDS, STD, and TB prevention.
- Planned Parenthood
Nationwide organization that provides sexual and reproductive health services. Website includes sexual health information for men and women as well as directory of providers.
- Society for Human Sexuality: Sexuality.org
Features an in-depth guide to safer sex. Also offers a concise version