6. Spanish Wikipedia - Wikipedia
Description: The Spanish Wikipedia (Spanish: Wikipedia en español) is a Spanish-language edition of Wikipedia, a free, online encyclopedia.It has 1,643,874 articles. Started in May 2001, it reached 100,000 articles on March 8, 2006 and 1,000,000 articles on May 16, 2013. It is the 9th-largest Wikipedia as measured by the number of articles and has the 4th-largest number of edits.