Internet Nonprofit Center contains information for and about nonprofits.

GuideStar  is "The National Database of Nonprofits."

Genie has information and resources for the nonprofit community.

Small Business Administration area of its website designed to help nonprofit organizations by presenting nonprofit information pertinent to small businesses, as well as to providing access to online Federal information and services. The site is linked to official Federal Departments and agencies that contain information about grants, regulations, taxes, and other services.

FirstGov for Businesses and Nonprofits is the official U.S. gateway to all government information, is the catalyst for a growing electronic government.

Internal Revenue Service information for charities and other nonprofits.

US Postal Service Nonprofit Standard Mail Eligibility information

Council on Foundations is a membership organization of more than 2,000 grantmaking foundations and giving programs worldwide. They provide leadership expertise, legal services and networking opportunities—among other services—to members and to the general public. 

Foundation Center mission is to support and improve philanthropy by promoting public understanding of the field and helping grantseekers succeed.

Nonprofit Online News is an interesting and very informative blog for the online nonprofit community that is part of the Gilbert Center.

PNNOnline is "the nonprofit news and information resource."

PJ

Philanthropy Journal is "Your Online Source for Nonprofit News."

Office of Management and Budget WATCH Nonprofit Issues is part of OMB Watch--formed in 1983 to lift the veil of secrecy shrouding the White House Office of Management and Budget (OMB), which oversees regulation, the budget, information collection and dissemination, proposed legislation, testimony by agencies, and much more. By then, it was quite apparent that OMB's actions were having an enormous impact on agency operations and the pursuit of social justice.

About.com Nonprofit News has news and current events affecting nonprofit organizations and their constituents.  It's your guide to one of hundreds of sites.

Disaster Preparedness and Emergency Response Association was founded in 1962 to assist communities worldwide in disaster preparedness, response and recovery, and to serve as a professional association linking professionals, volunteers, and organizations active in all phases of emergency management.

North Carolina Center for Nonprofits mission  is to serve, promote, and represent the nonprofit sector and strengthen nonprofits' effectiveness as they improve North Carolina's quality of life.

NCexChange is a project of the North Carolina Justice & Community Development Center whose mission is to promote and support the effective use of electronic networking technologies by nonprofit organizations and low income communities throughout North Carolina.

Nonprofit Expert is for those who are interested in starting a nonprofit or have general questions on nonprofit law.