Wiki – Wikipedia, the free encyclopedia
A wiki (i// WIK-ee) is a web application which allows people to add, modify, or delete content in collaboration with others. In a typical wiki, text is written using a simplified markup language (known as "wiki markup") or a rich-text editor.[1][2] While a wiki is a type of content management system, it differs from a blog or most other such systems in that the content is created without any defined owner or leader, and wikis have little implicit structure, allowing structure to emerge according to the needs of the users.[2]
The encyclopedia project Wikipedia is the most popular wiki on the public web in terms of page views,[3] but there are many sites running many different kinds of wiki software. Wikis can serve many different purposes both public and private, including knowledge management, notetaking, community websites and intranets. Some permit control over different functions (levels of access). For example, editing rights may permit changing, adding or removing material. Others may permit access without enforcing access control. Other rules may also be imposed to organize content.
Ward Cunningham, the developer of the first wiki software, WikiWikiWeb, originally described it as "the simplest online database that could possibly work".[4] "Wiki" (pronounced [wiki][note 1]) is a Hawaiian word meaning "quick".[5][6][7]
Ward Cunningham and co-author Bo Leuf, in their book The Wiki Way: Quick Collaboration on the Web, described the essence of the Wiki concept as follows:[8]
A wiki enables communities to write documents collaboratively, using a simple markup language and a web browser. A single page in a wiki website is referred to as a "wiki page", while the entire collection of pages, which are usually well interconnected by hyperlinks, is "the wiki". A wiki is essentially a database for creating, browsing, and searching through information. A wiki allows non-linear, evolving, complex and networked text, argument and interaction.[9]
A defining characteristic of wiki technology is the ease with which pages can be created and updated. Generally, there is no review before modifications are accepted. Many wikis are open to alteration by the general public without requiring registration of user accounts. Many edits can be made in real-time and appear almost instantly online. This can facilitate abuse of the system. Private wiki servers require user authentication to edit pages, and sometimes even to read them.
Maged N. Kamel Boulos, Cito Maramba and Steve Wheeler write that the open wikis produce a process of Social Darwinism. "'Unfit' sentences and sections are ruthlessly culled, edited and replaced if they are not considered 'fit', which hopefully results in the evolution of a higher quality and more relevant page. Whilst such openness may invite 'vandalism' and the posting of untrue information, this same openness also makes it possible to rapidly correct or restore a 'quality' wiki page."[10]
Some wikis have an "edit" button or link directly on the page being viewed, if the user has permission to edit the page. If the user does not have the ability to edit the page (due to protection) the page may have a button that says "view source". This leads to an editing page which allows participants to structure and format wiki pages with a simplified markup language, sometimes known as wikitext (for example, starting a line of text with an asterisk often sets up a bulleted list). The style and syntax of wikitexts can vary greatly among wiki implementations,[example needed] some of which also allow HTML tags. Wikis favour plain-text editing, with fewer and simpler conventions than HTML, for indicating style and structure. Although limiting access to HTML and Cascading Style Sheets (CSS) of wikis limits user ability to alter the structure and formatting of wiki content, there are some benefits. Limited access to CSS promotes consistency in the look and feel, and having JavaScript disabled prevents a user from implementing code that may limit other users' access. The "view source" link links to a page where the user can view the markup of the page.
"I've had '''nothing''' yet," Alice replied in an offended tone, "so I can't take more."
"You mean you can't take ''less''?" said the Hatter. "It's very easy to take ''more'' than nothing."
See the article here:
Wiki - Wikipedia, the free encyclopedia
- Wikipedia turns 25 and shares a glimpse into the lives of its volunteer editors - The Verge - January 18th, 2026 [January 18th, 2026]
- Wikipedia celebrates 25 years of knowledge at its best - Wikimedia Foundation - January 18th, 2026 [January 18th, 2026]
- London PR firm rewrites Wikipedia for governments and billionaires - TBIJ - January 18th, 2026 [January 18th, 2026]
- Microsoft, Meta, and Amazon are paying up for enterprise access to Wikipedia - The Verge - January 18th, 2026 [January 18th, 2026]
- Wikipedia's 25th anniversary: The story behind the creation of Concord, New Hampshire, article. - Concord Monitor - January 18th, 2026 [January 18th, 2026]
- At 25, Wikipedia Now Faces Its Most Existential ThreatGenerative A.I. - Scientific American - January 18th, 2026 [January 18th, 2026]
- Wikipedia marks 25 years by celebrating its volunteer army of editors - Ad Age - January 18th, 2026 [January 18th, 2026]
- Wikipedia Turns 25, Sells Access To Amazon, Meta, Microsoft And Other AI Giants - Forbes - January 18th, 2026 [January 18th, 2026]
- Wikipedia Is Now 25 Years Old [Citation Not Needed] - PCMag - January 18th, 2026 [January 18th, 2026]
- Wikipedia is now 25 years old worlds 7th most popular website now has over 7 million English articles and 7 billion monthly visitors - Tom's Hardware - January 18th, 2026 [January 18th, 2026]
- Microsoft, Meta, and Amazon are paying up for enterprise access to Wikipedia - TechRadar - January 18th, 2026 [January 18th, 2026]
- After Being Pillaged By AI Companies, Wikipedia Signs Deal to Get Paid By Them - Futurism - January 18th, 2026 [January 18th, 2026]
- Wikipedia is more important, and more vulnerable, than ever - The Boston Globe - January 18th, 2026 [January 18th, 2026]
- Wikipedia Partners With Big Tech Companies To Allow Access To Its Data For Developing And Training AI Models - AfroTech - January 18th, 2026 [January 18th, 2026]
- Wikipedia Marks 25 Years, Spotlighting Africas Growing Role In Knowledge - AfricaBrief - January 18th, 2026 [January 18th, 2026]
- Daily Digest: Wikipedia cuts deal with AI giants, Green Day coming to S.F. waterfront - San Francisco Business Times - The Business Journals - January 18th, 2026 [January 18th, 2026]
- AI firms need to pay fair share for using Wikipedia, founder says - Euronews.com - January 18th, 2026 [January 18th, 2026]
- Newsletter | Ecocide, a controversial mega-bridge & Wikipedia manipulation - Follow the Money - Platform for investigative journalism - January 18th, 2026 [January 18th, 2026]
- Wikipedia is now getting paid by Meta, Microsoft, Perplexity, and other AI companies - TechSpot - January 18th, 2026 [January 18th, 2026]
- Wikipedia Strikes Lucrative Deals with Tech Giants for AI Training Access - Technology Org - January 18th, 2026 [January 18th, 2026]
- Wikipedia commemorates 25th anniversary by inking AI licensing deals - Yahoo News Malaysia - January 18th, 2026 [January 18th, 2026]
- Microsoft, Meta, Amazon, Perplexity, and Mistral AI officially announced as paid program partners of Wikipedia - GIGAZINE - January 18th, 2026 [January 18th, 2026]
- How Africa Is Helping Rewrite the Worlds Knowledge as Wikipedia Turns 25 - Dawan Africa - January 18th, 2026 [January 18th, 2026]
- Why Microsoft, Meta, and Amazon Are Now Paying Wikipedia - TechRepublic - January 16th, 2026 [January 16th, 2026]
- Wikipedia will share content with AI firms in new licensing deals - Ars Technica - January 16th, 2026 [January 16th, 2026]
- Editorial: Happy 25th birthday, Wikipedia. We now admit to liking you. - Chicago Tribune - January 16th, 2026 [January 16th, 2026]
- Wikipedia commemorates 25th anniversary by inking AI licensing deals - AOL.com - January 16th, 2026 [January 16th, 2026]
- As Wikipedia turns 25, its future will depend on AI for better or worse - Sherwood News - January 16th, 2026 [January 16th, 2026]
- Can Wikipedia survive the age of AI? - San Francisco Chronicle - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - Oskaloosa Herald - January 16th, 2026 [January 16th, 2026]
- If You Cant Beat Them, Join Them: Wikipedia Shows the Way Into an AI Universe - CXOToday.com - January 16th, 2026 [January 16th, 2026]
- Wikipedia signs AI content training deals with Microsoft, Meta, and Amazon - The American Bazaar - January 16th, 2026 [January 16th, 2026]
- Let the birthday festivities begin! Wikipedia turns 25 - Wikimedia.org - January 16th, 2026 [January 16th, 2026]
- Wikipedia may be the largest compendium of human knowledge ever created, but can it survive? - Financial Times - January 16th, 2026 [January 16th, 2026]
- Wikipedia turns 25 today but faces more threats than ever before - 9to5Mac - January 16th, 2026 [January 16th, 2026]
- Wikipedia at 25: can its original ideals survive in the age of AI? - The Conversation - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - nwitimes.com - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - Kearney Hub - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - La Crosse Tribune - January 16th, 2026 [January 16th, 2026]
- Wikipedia signs data agreements with tech giants for AI training ahead of 25th anniversary - - January 16th, 2026 [January 16th, 2026]
- Wikipedia at 25: Microsoft, Meta, Amazon Now Pay to Train AI on It - H2S Media - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - Winston-Salem Journal - January 16th, 2026 [January 16th, 2026]
- Happy Birthday, Wikipedia: We need you now more than ever - Salon.com - January 16th, 2026 [January 16th, 2026]
- Wikipedia inks AI deals with Microsoft, Meta and Perplexity as it marks 25th birthday - Kenosha News - January 16th, 2026 [January 16th, 2026]
- Wikipedia signs AI deal with Amazon, Meta, Microsoft and Perplexity on 25th anniversary: Here's what this means - Mint - January 16th, 2026 [January 16th, 2026]
- Indian doctor in Sweden stars in Wikipedia's 25th anniversary celebrations - WION - January 16th, 2026 [January 16th, 2026]
- Wikipedia commemorates 25th anniversary by inking AI licensing deals - The Independent - January 16th, 2026 [January 16th, 2026]
- Wikipedia Secures AI Licensing Deals with Amazon, Meta, and Microsoft as Traffic Decline Threatens Sustainability - WinBuzzer - January 16th, 2026 [January 16th, 2026]
- The Wikipedia-AI Pact: A 25th Anniversary Strategy to Secure the Worlds Source of Truth - FinancialContent - January 16th, 2026 [January 16th, 2026]
- Wikipedia celebrates 25 years of free knowledge and global impact - Geo News - January 16th, 2026 [January 16th, 2026]
- Wikipedia turns 25: how the reference site became the infrastructure of the Internet - Mezha - January 16th, 2026 [January 16th, 2026]
- Global information resource Wikipedia celebrates 25 years - Bizcommunity - January 16th, 2026 [January 16th, 2026]
- Wikipedia Inks AI Licensing Deals with Microsoft, Meta on 25th Anniversary - WebProNews - January 16th, 2026 [January 16th, 2026]
- Wikipedia at 25: What the data tells us - Pew Research Center - January 14th, 2026 [January 14th, 2026]
- Object permanence. Wikipedia v The Register; Jeff Koons v - Cory Doctorow Medium - January 14th, 2026 [January 14th, 2026]
- A thing of the past? 25 years of Wikipedia and the new competition from AI - igorsLAB - January 14th, 2026 [January 14th, 2026]
- Wikipedia turns a quarter of a century old. The ultimate challenge with Ai - Il Sole 24 ORE - January 14th, 2026 [January 14th, 2026]
- Trump Shares Mock Wikipedia Page Referring to Himself as 'Acting President of Venezuela' - Latin Times - January 14th, 2026 [January 14th, 2026]
- GROKIPEDIA IS EXPLODING, AND PEOPLE ARE FED UP WITH WIKIPEDIA Grokipedia is growing fast, hitting all-time highs with 156,000+ Grok-approved edits and... - January 14th, 2026 [January 14th, 2026]
- Jimmy Wales: defending Wikipedia in wake of Musks woke attack - The Times - January 14th, 2026 [January 14th, 2026]
- The Backstory: The Night Wikipedia Almost Vanished - Z100 New York - January 14th, 2026 [January 14th, 2026]
- On Sunday evening, Trump posted on Truth Social a fake image of a Wikipedia page labeling him as the Acting President of Venezuela as of January 2026.... - January 14th, 2026 [January 14th, 2026]
- Elon Musks Grokipedia surges to 5.6M articles, almost 79% of English Wikipedia - Teslarati - January 14th, 2026 [January 14th, 2026]
- I Thought This Wikipedia App for Linux was Pointless (I Was Wrong) - It's FOSS - January 14th, 2026 [January 14th, 2026]
- Forum From the Archives: Wikipedia Founder Jimmy Wales on How to Build Trust - KQED - December 25th, 2025 [December 25th, 2025]
- Wikipedia debating if attack targeting Jews at Sydney Chanukah event was terror - JNS.org - December 18th, 2025 [December 18th, 2025]
- Provisional Bondi Truths: Containment, Power, and the Struggle to Name Palestine on Wikipedia - Countercurrents - December 18th, 2025 [December 18th, 2025]
- Wikipedia | Wikipedia in the Age of AI and Bots - Stanford HAI - December 18th, 2025 [December 18th, 2025]
- Can we still trust Wikipedia? - GZERO Media - December 18th, 2025 [December 18th, 2025]
- Does this Wikipedia listing show 'Scooby-Doo' characters were based on real '60s leftist group? - Snopes - December 18th, 2025 [December 18th, 2025]
- Jannik Sinner repeats feat: leader in Wikipedia searches in Italy for the second consecutive year - Punto de Break - December 18th, 2025 [December 18th, 2025]
- Elon Musk versus Wikipedia continues an age-old battle over truth - Prospect Magazine - December 10th, 2025 [December 10th, 2025]
- Wikipedia is getting in on the yearly wrapped game - The Verge - December 10th, 2025 [December 10th, 2025]
- Wikipedia Has Its Own Version of Wrapped Now, But Theres One Little Problem - Gizmodo - December 10th, 2025 [December 10th, 2025]
- AYENI: Your teachers were wrong about Wikipedia - The Vanderbilt Hustler - December 10th, 2025 [December 10th, 2025]
- Pope Leo XIV among the most viewed and searched on Wikipedia and Google in 2025 - Catholic News Agency - December 10th, 2025 [December 10th, 2025]
- Wikipedia Rolls Out Spotify Wrapped-Style End-of-Year Recap - PCMag - December 10th, 2025 [December 10th, 2025]
- Wikipedia Launches Personal 'Wrapped' Feature to Boost App Downloads - The Tech Buzz - December 10th, 2025 [December 10th, 2025]
- Heres the top 20 list of most-viewed Wikipedia articles in 2025 - FOX 8 News - December 10th, 2025 [December 10th, 2025]
- Wikipedia announces Pope Leo XIV as their 5th most-read profile of 2025 - Rome Reports - December 10th, 2025 [December 10th, 2025]