There are many websites devoted to fact-checking. And they might not be reputable either. If you want to see other reputable fact-checking sites, try googling fact checking libguides and you will find what other libraries have felt were valuable.
From the Annenburg Public Policy Center at the University of Pennsylvania. "We are a nonpartisan, nonprofit “consumer advocate” for voters that aims to reduce the level of deception and confusion in U.S. politics. We monitor the factual accuracy of what is said by major U.S. political players in the form of TV ads, debates, speeches, interviews and news releases. Our goal is to apply the best practices of both journalism and scholarship, and to increase public knowledge and understanding."
"The purpose of this Web site, and an accompanying column in the Sunday print edition of The Washington Post, is to “truth squad” the statements of political figures regarding issues of great importance, be they national, international or local."
"The News Literacy Project, a nonpartisan education nonprofit, is building a national movement to advance the practice of news literacy throughout American society, creating better informed, more engaged and more empowered individuals — and ultimately a stronger democracy."
"PolitiFact is a fact-checking website that rates the accuracy of claims by elected officials and others who speak up in American politics. PolitiFact is run by editors and reporters from the Tampa Bay Times, an independent newspaper in Florida." In 2009, PolitiFact won the Pulitzer Prize for National Reporting.
Started in the 90s, Snopes.com is perhaps the most popular website for looking up urban legends, but they also fact check misinformation of all kinds.