Online Encyclopaedia Wikipedia has turned 20 on January 15.
Wikipedia was launched on January 15, 2001, by Jimmy Wales and Larry Sanger. Sanger coined its name as a portmanteau of “wiki” and “encyclopaedia”. It was initially an English-language encyclopaedia, but versions in other languages were quickly developed. With 6.2 million articles, the English Wikipedia is the largest of the more than 300 Wikipedia encyclopaedias. Overall, Wikipedia comprises more than 55 million articles, attracting 1.7 billion unique visitors per month
Wikipedia is now the seventh-most popular website in the world.