Web site: http://www.nsarchive.org/
The National Security Archive collects and publishes declassified documents obtained through the Freedom of Information Act and serves as a repository of government records on a wide range of topics pertaining to the national security, foreign, intelligence, and economic policies of the United States.
The Center for Responsive Politics (OpenSecrects.org) tracks money in U.S. politics and its effect on elections and public policy.