FactCheck.org is a non-partisan, nonprofit website devoted to fact-checking claims made in the U.S. media.

Most of FactCheck.org’s content consists of rebuttals to what it considers inaccurate, misleading, or false claims made by and politicians. The site has also made a point of checking and correcting misleading claims made by various partisan groups. It describes itself as a “‘consumer advocate’ for voters that aims to reduce the level of deception and confusion in U.S. politics.”

FactCheck.org is a project of the Annenberg Public Policy Center at the University of Pennsylvania’s Annenberg School for Communication. It is funded primarily by the Annenberg Foundation, a communication-oriented grantmaking institution, and receives additional funding from the Flora Family Foundation. In 2010, the project began accepting donations from individual members of the public, largely in response to previous unsolicited offers of support from its readers.