Graduate-School.PhDs.org/education-index: The project is a comprehensive and informative resource that systematically sorts out the available undergraduate and graduate programs available today in the U.S.
Onlinephdprograms.org: This site features all the available PhD programs in the U.S, as well as a large database of available scholarships.
Council of Graduate Schools: http://cgsnet.org
Graduate Student Financial Planning: http://gradsense.org/gradsense
National Postdoctoral Association: http://www.nationalpostdoc.org/