Stanford Encyclopedia of Philosophy - From the Metaphysics Research Lab at Stanford University. In this dynamic reference work, each entry is maintained and kept up to date by an expert or group of experts in the field. [http://plato.stanford.edu/contents.html]
The Internet Encyclopedia of Philosophy - Articles in the Internet Encyclopedia of Philosophy are currently (1) adaptations from public domain sources, (2) adaptations of material written by the editor for classroom purposes, and (3) original contributions by professional philosophers around the Internet. [http://www.utm.edu/research/iep/]
Daily Nous - Daily Nous provides information and news for and about the philosophy profession. The site is maintained by me, Justin Weinberg, an associate professor of philosophy at the University of South Carolina.
The American Philosophical Association - is the main professional organization for philosophers in the U.S., includes in its website information onmeetings, governance, resources, publications, services and professional data and issues. From the University of Delaware. [http://www.apaonline.org]