From Wikipedia, the free encyclopedia
This article is about the Internet encyclopedia. For other uses, see Wikipedia (disambiguation).
For Wikipedia's non-encyclopedic visitor introduction, see Wikipedia:About.
For the Wikipedia home page, see Wikipedia:Main Page.
 
The logo of Wikipedia, a globe featuring glyphsfrom several writing systems, for the letter W or sounds "wi", "wo" or "wa"
| |
| Web address | wikipedia |
|---|---|
| Slogan | The free encyclopedia that anyone can edit |
| Commercial? | No |
Type of site
| Internet encyclopedia |
| Registration | Optional[notes 1] |
| Available in | 288 editions[1] |
| Users | 115,603 active editors[notes 2]and 27,284,854 registered editors |
Content license
| CC Attribution / Share-Alike 3.0 Most text is also dual-licensed underGFDL; media licensing varies |
| Written in | L A M P platform[2] |
| Owner | Wikimedia Foundation |
| Created by | Jimmy Wales, Larry Sanger[3] |
| Launched | January 15, 2001 |
Alexa rank
|  7[4] (January 2016) |
| Current status | Active |
Wikipedia (
i/ˌwɪkᵻˈpiːdiə/ or i/ˌwɪkiˈpiːdiə/ wik-i-pee-dee-ə) is a free-access, free-content Internet encyclopedia, supported and hosted by the non-profit Wikimedia Foundation. Those who can access the site can edit most of its articles.[5] It was ranked among the ten most popular websites,[4] and constitutes the Internet's largest and most popular general reference work.[6][7][8]
i/ˌwɪkᵻˈpiːdiə/ or i/ˌwɪkiˈpiːdiə/ wik-i-pee-dee-ə) is a free-access, free-content Internet encyclopedia, supported and hosted by the non-profit Wikimedia Foundation. Those who can access the site can edit most of its articles.[5] It was ranked among the ten most popular websites,[4] and constitutes the Internet's largest and most popular general reference work.[6][7][8]
Our founders, Jimmy Wales and Larry Sanger launched Wikipedia on January 15, 2001. Sanger[9] coined its name,[10] a portmanteau of wiki[notes 3] and encyclopedia. Initially only in English, we've quickly becamemultilingual as it developed similar versions in other languages, which differ in content and in editing practices. The English Wikipedia is now one of 291 Wikipedia editions and is the largest with 5,059,831 articles (having reached 5,000,000 articles in November 2015). There is a grand total, including all Wikipedias, of over 38 million articles in over 250 different languages.[12] As of February 2014, it had 18 billion page views and nearly 500 million unique visitors each month.[13]
A peer review of 42 science articles found in both Encyclopædia Britannica and Wikipedia was published in Nature in 2005, and found that our level of accuracy approached Encyclopedia Britannica 's.[14] Criticisms of Wikipedia include claims that it exhibits systemic bias, presents a mixture of "truths, half truths, and some falsehoods",[15] and that in controversial topics it is subject to manipulation and spin.[16]
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