Also in January 2001, Nupedia started Wikipedia. At first, it was not meant to be an encyclopedia. Instead, it was meant as a side-project to allow people to work on articles for Nupedia before they were peer reviewed. As Wikipedia got bigger and attracted new users, it began to run without Nupedia. However, Larry Sanger first led activity on Wikipedia. This was because he was the chief editor on Nupedia.