Khan Academy is a renowned non-profit educational institution that provides free educational videos through the internet, founded by Salman Khan in 2006. Khan Academy offers educational videos covering a variety of social science and natural science subjects such as mathematics, medicine, history, finance, computer science, chemistry, and physics. The instructional languages include English, German, Spanish, Chinese and dozens of other languages. Some of the Khan Academy's videos are translated on a number of public class websites in China.