Poynter.org
Founded in 1975, Poynter's primary mission is to encourage excellence in journalism and reporting, a goal it pursues by establishing rigorous, ethical standards in reporting and fact-checking.
FlackCheck
A project of Annenberg Classroom, FlackCheck's aim is to teach good information comsumption practices: how to spot deception, how to recognize and answer flaws in arguments, and so forth.
PunditFact
A project of Poynter, PunditFact weighs the communications of columnists, bloggers, news anchors and analysts, and others for accuracy, bias, and partisanship.
OpenSecrets.org