CSPAN - Created in 1979 by the cable television industry as a public service, this private, non-profit television company provides public access to the political process.
Library of Congress Thomas Server - Launched in 1995 by the Library of Congress, this web site makes federal legislative information freely available to the public.
LegiStorm - Launched in 2006, this non-partisan web site provides a variety of important information about the US Congress, including a database of congressional staff salaries and the most comprehensive database of all privately financed trips taken by members of Congress and congressional staffers. The site's stated purpose is to make the workings of Congress as transparent as possible.