Wikipedia

Wikipedia has been the most popular wiki on the Internet for quite some time. It's an online encyclopedia that is known to be editable by pretty much anyone.

Wikipedia was founded by Jimbo Wales and Larry Sanger in 2001, when it was highly experimental. After the site gained many more editors over a short time, the site became a much more serious effort. The Wikimedia Foundation (WMF) was founded in 2003, two years later. Now, Wikipedia and its sister projects are looked after collectively by this foundation.