- All About The Penis
 - Information about penises, from sexual function to anatomy to the cultural history of the phallus. - altPenis
- News, reviews, and discussion forums on penis enlargement and male genitals.
- altPenisSize.com
- Penis enlargement research information and stories, sex studies, and more.
- Anatomy of the Penis and Mechanics of Intercourse
- Information on how circumcision affects sensation and sexual function, from the Circumcision Information Resource Pages.
- BetterPenis.info
- Provides information about natural penis enlargement and the techniques involved, alternative enhancement methods, and the issue of penile size.
- Does Penis Size Matter?
- Discussion and answers to the age old question on whether penis size matters to women or not.
- e-Testicles.com
- Provides information on the male gonads, including anatomy, histology, and facts related to testicular pathology.
- Free Penis Enlargement Guide
- Penis enlargement exercises and information on how to build and use a homemade penis pump.
- Penis Doctor.org
- Features information on penis enlargement, impotence, penis health, male fertility, and more.
- Penis Enhancement Secrets
- Provides information about penis enlargement through methods including pills, exercise techniques, patches, and pumps.
- Penis Enlargement Guide.org
- Provides information and reviews about various penis enlargement methods and solutions.
- Penis Enlargement Options
- Discusses current popular methods of penis enlargement including pills, natural exercise techniques, stretching devices, and vacuum pumps.
- Penis Enlargement Page
- Provides information, resources, and website listings on penis enlargement and penis enlargement products.
- Penis Enlargement Reviewed
- Penis enlargement information, news, articles, and resources for penile augmentation methods.
- Penis Size Information
- Facts on penis size with some personal views about why penis size is important to men.
- Penis Website, The
- Discusses the size and shape of the flaccid and erect penis, women's views, and questions about sex, the penis, and masturbation.
- Penis-Enlargement.org
- Features information on a variety of penis enlargement methods including the use of pills, exercise, surgery, and traction.
- Penis-Website.com
- Features facts about penis size and shape and answers to penis problems.
- Sex Education Associates
- Discusses average penis size.
- Shagnasty's Penis Owners Club
- Includes the Penis Owners Manual, advice, and more.
- The-Penis.com
- Explores male sexuality issues, including andropause, hypospadias, penis size, masturbation, and oral sex.
- The-Penis.org
- Provides a photographic guide to penis size, shape, erection angle, curvature, and penile problems including sexually transmitted infections.
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