Mega Society – Recommended for its free online journal, with issues dating back into 1989; non-members can view the issues, as there is no password-protected login, and Mega’s Editor announces the publication of new issues to some non-Mega groups. The Mega Society was founded by Dr. Ronald K. Hoeflin in 1982. Members of Mega have created and maintain the Adaptive IQ Test, which may be used for admissions purposes in the future.

Omega Society – The Omega Society exists for the recognition and encouragement of individuals of extremely high intelligence. It was founded in 2005 by Ronald K. Hoeflin, Ph.D. Membership is now entirely free. The journal Termite is now entirely online, and there are no admission fees or any other fees.