This site began as a site to debunk urban legends, myths, rumors and conspiracy theories. It has now expanded to cover general fact-checking in all fields, including politics. It is regarded as highly reliable and neutral.
A Pulitzer Prize winning site, focusing on political claims made in the US. Well known for its ranking system for claims, ranging from True, and Mostly True to "Pants on Fire."
One of the oldest fact-checking sites, also originally focusing on urban legends, rumors and hoaxes, and now covering fake news sites and politcs as well.