The Sexuality Database  
   A database of articles about all aspects of sexuality.
   http://www.sexualitydata.com/

All About My Penis  
   The story of one man's penis and testicles, relating his experience of penis size and health, masturbation, sex, making love, with information on male sexual health, orgasm, and ejaculation.
   http://www.my-penis.org/

All About My Vagina  
   An extensive site covering all aspects of the female genitalia.
   http://www.myvag.net/

e-Vaginal.com  
   Information on the anatomy, histology, physiology and pathology of the vagina. Part of the ALtruis Biomedical Network.
   http://www.e-vaginal.com

Russian Woman and Sex  
   A one-page treatise on the attitudes of Russian women about sex.
   http://www.kagi.com/vit/russian-women/default.html

Vagina Vérité  
   Articles and discussions exploring a variety of vagina and vulva topics.
   http://www.vaginaverite.com/

Sexual Synonyms  
   A thesaurus of sexual terms and their street slang equivalents.
   http://male101.com/synonyms.html

History of Sexuality  
   A time line of sexuality information from pre-history to the recent sexual revolution. Includes a message board for topic discussions.
   http://www.historyofsexuality.com

Mimi.hu - Sexuality Index  
   Sexuality encyclopedia that quotes popular online resources.
   http://en.mimi.hu/sexuality/index_sexuality.html