Wikipedia, a free-content online encyclopedia written and maintained by a community of volunteers known as Wikipedians, began with its first edit on 15 January 2001, two days after the domain was registered. It grew out of Nupedia, a more structured free encyclopedia, as a way to allow easier and faster drafting of articles and translations.
A wiki is a form of hypertext publication on the internet which is collaboratively edited and managed by its audience directly through a web browser. A typical wiki contains multiple pages that can either be edited by the public or limited to use within an organization for maintaining its internal knowledge base.
MediaWiki is free and open-source wiki software originally developed by Magnus Manske for use on Wikipedia on January 25, 2002, and further improved by Lee Daniel Crocker, after which it has been coordinated by the Wikimedia Foundation. It powers several wiki hosting websites across the Internet, as well as most websites hosted by the Wikimedia Foundation including Wikipedia, Wiktionary, Wikimedia Commons, Wikiquote, Meta-Wiki and Wikidata, which define a large part of the set requirements for the software. MediaWiki is written in the PHP programming language and stores all text content into a database. The software is optimized to efficiently handle large projects, which can have terabytes of content and hundreds of thousands of views per second. Because Wikipedia is one of the world's largest and most visited websites, achieving scalability through multiple layers of caching and database replication has been a major concern for developers. Another major aspect of MediaWiki is its internationalization; its interface is available in more than 400 languages. The software has more than 1,000 configuration settings and more than 1,800 extensions available for enabling various features to be added or changed. Besides its usage on Wikimedia sites, MediaWiki has been used as a knowledge management and content management system on websites such as Fandom, wikiHow and major internal installations like Intellipedia and Diplopedia.
The English Wikipedia is the primary English-language edition of Wikipedia, an online encyclopedia. It was created by Jimmy Wales and Larry Sanger on 15 January 2001, as Wikipedia's first edition.
The Italian Wikipedia is the Italian-language edition of Wikipedia. This edition was created on 10 May 2001, and first edited on 11 June 2001. As of 26 August 2024, it has 1,879,090 articles and more than 2,547,655 registered accounts. It is the 9th-largest Wikipedia by the number of articles.
Jimmy Donal Wales, also known as Jimbo Wales, is an Internet entrepreneur, webmaster, and former financial trader. He is a co-founder of the non-profit free encyclopedia, Wikipedia, and the for-profit wiki hosting service Fandom. He has worked on other online projects, including Bomis, Nupedia, WikiTribune, and WT Social.
Wikipedia is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Wikipedia is the largest and most-read reference work in history, and is consistently ranked among the ten most visited websites; as of July 2024, it was ranked fifth by Semrush, and seventh by Similarweb. Founded by Jimmy Wales and Larry Sanger on January 15, 2001, Wikipedia has been hosted since 2003 by the Wikimedia Foundation, an American nonprofit organization funded mainly by donations from readers.
The Vietnamese Wikipedia is the Vietnamese-language edition of Wikipedia, a free, publicly editable, online encyclopedia supported by the Wikimedia Foundation. Like the rest of Wikipedia, its content is created and accessed using the MediaWiki wiki software.
Citizendium is an English-language wiki-based free online encyclopedia launched by Larry Sanger, co-founder of Nupedia and Wikipedia.
Conservapedia is an English-language, wiki-based, online encyclopedia written from a self-described American conservative and fundamentalist Christian point of view. The website was established in 2006 by American homeschool teacher and attorney Andrew Schlafly, son of the conservative activist Phyllis Schlafly, to counter what he perceived as a liberal bias on Wikipedia. It uses editorials and a wiki-based system for content generation.
Wikivoyage is a free web-based travel guide for travel destinations and travel topics written by volunteer authors. It is a sister project of Wikipedia and supported and hosted by the same non-profit Wikimedia Foundation (WMF). Wikivoyage has been called the "Wikipedia of travel guides".
The history of wikis began in 1994, when Ward Cunningham gave the name "WikiWikiWeb" to the knowledge base, which ran on his company's website at c2.com, and the wiki software that powered it. The wiki went public in March 1995, the date used in anniversary celebrations of the wiki's origins. c2.com is thus the first true wiki, or a website with pages and links that can be easily edited via the browser, with a reliable version history for each page. He chose "WikiWikiWeb" as the name based on his memories of the "Wiki Wiki Shuttle" at Honolulu International Airport, and because "wiki" is the Hawaiian word for "quick".
Wikitravel is a web-based collaborative travel guide based on the wiki format and owned by Internet Brands. It was most active from 2003 through 2012, when most of its editing community left and brought their contributions to the nonprofit Wikivoyage guide.
Bomis was a dot-com company best known for supporting the creations of free-content online-encyclopedia projects Nupedia and Wikipedia. It was co-founded in 1996 by Jimmy Wales, Tim Shell, and Michael Davis. By 2007, the company was inactive, with its Wikipedia-related resources transferred to the Wikimedia Foundation.
WikiTrust was a software product, available as a Firefox Plugin, which aimed to assist editors in detecting vandalism and dubious edits by highlighting the "untrustworthy" text with a yellow or orange background. As of September 2017, the server is offline, but the code is still available for download.
Lawrence Mark Sanger is an American Internet project developer and philosopher who co-founded Wikipedia along with Jimmy Wales. Sanger coined Wikipedia's name, and provided initial drafts for many of its early guidelines, including the "Neutral point of view" and "Ignore all rules" policies. Prior to Wikipedia, he was the editor-in-chief of Nupedia, another online encyclopedia. He later worked on other encyclopedic projects, including Encyclopedia of Earth, Citizendium, and Everipedia, and advised the nonprofit American political encyclopedia Ballotpedia.
Nupedia was an English-language online encyclopedia whose articles were written by volunteer contributors with relevant subject matter expertise, reviewed by expert editors before publication, and licensed as free content. It was founded by Jimmy Wales and underwritten by Bomis, with Larry Sanger as editor-in-chief. Nupedia operated from October 1999 until September 2003. It is best known today as the predecessor of Wikipedia. Nupedia had a seven-step approval process to control content of articles before being posted, rather than live wiki-based updating. Nupedia was designed by a committee of experts who predefined the rules. It had only 21 articles in its first year, compared with Wikipedia having 200 articles in the first month, and 18,000 in the first year.
The Wikipedia community, collectively and individually known as Wikipedians, is an online community of volunteers who create and maintain Wikipedia, an online encyclopedia. Since August 2012, the word "Wikipedian" has been an Oxford Dictionary entry. Wikipedians may or may not consider themselves part of the Wikimedia movement, a global network of volunteer contributors to Wikipedia and other related projects hosted by the Wikimedia Foundation.
VisualEditor (VE) is an online rich-text editor for MediaWiki-powered wikis that provides a direct visual way to edit pages based on the "what you see is what you get" principle. It was developed by the Wikimedia Foundation in partnership with Fandom. In July 2013, it was enabled by default on several of the largest Wikipedia projects.
The first edit in Wikipedia's database, to HomePage, was made on January 15, 2001, and states in its entirety "This is the new WikiPedia!" In December 2021, co-founder Jimmy Wales announced that he would sell a website containing a re-creation of an earlier edit that he said he made and then later deleted, which contained the text "Hello, World!", to the highest bidder as a non-fungible token (NFT).
