This nonpartisan, nonprofit project of the Annenberg Public Policy Center of the University of Pennsylvania monitors the accuracy of what is said by U.S. politicians, TV ads, debates, interviews and other news sources.
Snopes
This independent, nonpartisan website run by professional researcher and writer David Mikkelson researches urban legends and other rumors.
Poynter
Poynter provides news, best practice tips for journalists, and other information. The site serves as a guide to help strengthen writers' journalistic skills. Poynter also specializes in the importance of fact-checking.
Common Sense Media
While Common Sense Media is intended for teacher use, this page includes lessons, videos, and handouts that teachers can use to help students with fact-checking.