Internet Mental Health
Myriad of mental health information. Offers translations into multiple languages.

Psychcentral.com
Index of psychology related web sites.

PsychWeb
Psychology-related information for students and teachers of psychology.

PsycSite
Divided into different centers geared towards either the student, teacher or professional.

12 Step Cyber Cafe
Dedicated to providing a variety of twelve step program information.

Web of Addictions
Provides information about alcohol and other drug addictions.

American Philosophical Association
Official site for the APA.

English Server Philosophy Page
Collection of canonical philosophic texts and links to scholarly philosophic organizations.

Guide to Philosophy on the Internet
Index of general philosophy sites on the web.

History of Western Philosophy
A narrative survey of the historical development of Western philosophy.

Internet Encyclopedia of Philosophy
Searchable encyclopedia for philosophy.

Philosophy Research Base
Categorized by history, subject and author, this meta-index integrates text resources with the best online resources. 

Stanford Encyclopedia of Philosophy
Another searchable encyclopedia; meticulously maintained.

Taoism and the Philosophy of Tai Chi Chuan
Outlines the basic principles and history of Taoism.