I look for "useful to not-for-profit" tools, sites, and resources. Recently a new site called nonprofitlist.org has been developed. The site is broken up into each of the 50 states and you have a choice of clicking on a state like Florida or using the list below the map.

Our goal is to map all of the non profit organization in the United States.

It is a lofty plan that may prove to be difficult. However, if the site makes use of tools like Guidestar they may be able to get close.

Currently the listings are simply name, address, and phone number. However, it seems that they may have more planned indicating:

We provide as much information as possible for non profit organization.

I wish them well and hope that the site is a success.