"PolitiFact is a nonpartisan fact-checking website to sort out the truth in American politics. PolitiFact was created by the Tampa Bay Times, a Florida newspaper, in 2007. In 2018, PolitiFact was acquired by the Poynter Institute, a nonprofit school for journalists." -- from PolitiFact website, "Who Pays for PolitiFact?" page.
"We are a nonpartisan, nonprofit “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 of the University of Pennsylvania." -- from FactCheck.org website, "Our Mission" page.