Pennsylavania Association of Nonprofit Organizations
PANO is the statewide organization serving and strengthening the charitable nonprofit sector through leadership, advocacy, education, services in order to improve the quality of life of Pennsylvania's people.
http://www.pano.org/

Nonprofit PathfinderProfiles of experiments in community building
Methodologies for defining results
Sources of information on the nonprofit sector
Literature and libraries
http://www.independentsector.org/programs/research/NA01main.html

The Right-to-Know Network
The Right-to-Know Network provides free access to numerous databases, text files, and conferences on the environment, housing, and sustainable development. With the information available on RTK NET, you can identify specific factories and their environmental effects; analyze reinvestment by banks in their communities; and assess people and communities affected.
http://www.rtk.net/

WomensNet
Connecting People who are Changing the World
Online international resources for women -organize and activism.
http://www.igc.org

Simple End User Linux
The end goal of SEUL is to have a comprehensive suite of high-quality applications (productivity applications as well as leisure/programming applications) available under the GPL for the Linux platform, as well as a broader base of educated users around the world who understand why free software is better. SEUL is a volunteer project currently focusing on Linux in education, Linux in science, advocacy documents, managing and coordinating communications between projects, and hosting related development projects.
http://www.seul.org/

Philadelphia Higher Education Network for Neighborhood Development
A consortium of 42 colleges and universities in the greater Philadelphia area. PHENND works to build the capacity of its member institutions to develop mutually beneficial, sustained, and democratic community-based service learning partnerships. The consortium actively seeks to revitalize local communities and schools and foster civic responsibility among the region's colleges and universities.
http://www.upenn.edu/ccp/PHENND.html