
A wiki is a hypertext publication collaboratively edited and managed by its own audience directly using a web browser. A typical wiki contains multiple pages for the subjects or scope of the project and could be either open to the public or limited to use within an organization for maintaining its internal knowledge base.

The history of wikis begins 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".

Apache Wave is a discontinued software framework for real-time collaborative editing online. Google originally developed it as Google Wave. It was announced at the Google I/O conference on 28 May 2009.

The Biographicon was a wiki-based website containing biographies of famous and non-famous people, that existed from March to August 2008. The site also showed connections between individuals covered, and explained the circumstances under which they met.

Pokémon, also known as Pocket Monsters in Japan, is a Japanese media franchise managed by The Pokémon Company, a company founded by Nintendo, Game Freak, and Creatures. The franchise was created by Satoshi Tajiri in 1995, and is centered on fictional creatures called "Pokémon", which humans, known as Pokémon Trainers, catch and train to battle each other for sport. Games, shows and other works within the franchise are set in the Pokémon universe. The English slogan for the franchise is "Gotta Catch 'Em All".

Chalo Chatu translated as our world in the Zambian language is an English-language wiki-based free encyclopaedia project created by Jason Mulikita dedicated to documenting the entire Zambia only and also try to preserve the history and pride of Zambia covering historical events and current events, notable public figures, companies, organizations, websites, national monuments and other notable key features of Zambia. The site uses MediaWiki software to maintain a user-created database of information. The site's content is under a Creative Commons license(CC BY-SA 3.0) which means that it is available free to the public, but cannot be used for commercial purposes and should not be modified by people who are not part of the community of the website. Chalo Chatu is a work-in-progress, with articles in various stages of completion.

Conservapedia is an English-language wiki encyclopedia project 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 in Wikipedia. It uses editorials and a wiki-based system for content generation.

daviswiki.org is a wiki based in Davis, California about the people, events, universities, bands, places and other things of the city. For example, it includes information about local events, advice for classes to take or not take at UC Davis, locations of the cleanest bathrooms in town, and ways a poor student can best pack a to-go box from the local restaurant buffets. Newcomers or anyone with a question about life in Davis are often asked by "wikivangelists", "Did you check the wiki?", much in the spirit of RTFM. It was launched in June 2004.

The Families In British India Society (FIBIS) is a genealogical organisation which assists people in researching their family history and the background against which their ancestors led their lives in British India.

The Family History Research Wiki provides handbook reference information, and educational articles to help genealogists find and interpret records of their ancestors. It is a free-access, free-content, online encyclopedia on a wiki, hosted as part of the FamilySearch site. It is sponsored by FamilySearch, a non-profit organization, and a genealogical arm of The Church of Jesus Christ of Latter-day Saints. Anyone with access to the Internet may read any of the over 91,000 articles, and almost all articles can be edited by registered users (contributors). Registration is free.

Geo-Wiki is a platform for engaging citizens and experts in both biophysical and socioeconomic monitoring, established in 2009 at the International Institute for Applied Systems Analysis (IIASA). It aids in both, the validation of existing geographical information and the collection of new geographical information through crowdsourcing and citizen science. Using tools such as Google satellite imagery, Bing Maps, Geotagged photographs and the Internet, individual volunteers are able to contribute valuable in-situ data on land cover and land use, either by validating existing data in comparing it with satellite imagery, or by collecting new. Except on the conventional way, other method for crowd-sourced data collection in Geo-Wiki is through campaigns and games, used as incentives to motivate citizens. Collected data in the platform is freely available.

Giant Bomb is an American video game website and wiki that includes personality driven gaming videos, commentary, news and reviews, created by former GameSpot editors Jeff Gerstmann and Ryan Davis. The website was voted by Time magazine as one of the Top 50 websites of 2011. Originally part of Whiskey Media, the website was acquired by CBS Interactive in March 2012 before being sold to Red Ventures in 2020.

Hackteria is a web platform and collection of open source biological art projects instigated in February 2009 by Andy Gracie, Marc Dusseiller and Yashas Shetty, after collaboration during the Interactivos?09 Garage Science at Medialab Prado in Madrid. According to their website the aim of the project is to develop a rich wiki-based web resource for people interested in or developing projects that involve bioart, open source software/open source hardware, DIY biology, art/science collaborations and electronic experimentation.

The Hidden Wiki was a dark web MediaWiki wiki operating as Tor hidden services that could be anonymously edited after registering on the site. The main page served as a directory of links to other .onion sites.

Theodore Robert Beale, also known as Vox Day, is an American far-right activist, writer, musician, publisher, and video game designer. He has been described as a white supremacist, a misogynist, and part of the alt-right.

Lingua Libre is an online collaborative project and tool by the Wikimedia France association, which aims to build a collaborative, multilingual, audiovisual corpus under free license.

Namuwiki is a Paraguay-based Korean wiki created on April 17, 2015, powered by the proprietary wiki software The Seed. Its name, "Namu" (나무) translates literally to "tree" in Korean. According to its slogan and self-description, Namuwiki strives to share community-driven knowledge and information, whilst respecting the freedom and equal rights of every user.

OpenSym is a shorthand for International Symposium on Open Collaboration, formerly International Symposium on Wikis and Open Collaboration, also formerly WikiSym or the Wiki Symposium, a conference dedicated to wiki research and practice. In 2014, the name of the conference was changed from WikiSym to OpenSym to reflect a broadening of scope from wiki and Wikipedia research and practice to open collaboration research, including wikis and Wikipedia research, but also free/libre/open source, open data, etc. research. The conference series is held in-cooperation with ACM SIGWEB and ACM SIGSOFT and its proceedings are published in the ACM Digital Library.

RationalWiki is a wiki whose stated goals are to "analyze and refute pseudoscience and the anti-science movement, document 'crank' ideas, explore conspiracy theories, authoritarianism, and fundamentalism, and analyze how these subjects are handled in the media." It was created in 2007 as a counterpoint to Conservapedia after an incident in which contributors attempting to edit Conservapedia were banned.

Reddit is a social news aggregation, web content rating, and discussion website, recently including livestream content through Reddit Public Access Network.

The Visual Novel Database is an online database, wiki and Internet forum for visual novels. As of 2019, the vndb had catalogued a total of 24,000 visual novels, and its forum had reached 14,300 users. According to Electronic Gaming Monthly, the vndb was responsible for helping bring visual novels to an international audience.

Top Level Design is a company based in Portland, Oregon, in the United States, and the domain name registry for the generic top-level domains (gTLD) .wiki, .ink, .design, and .gay. Ray King serves as its chief executive officer (CEO).

The Universal Edit Button is a browser extension that provides a green pencil icon in the address bar of a web browser that indicates that a web page on the World Wide Web is editable. It is similar to the orange "broadcast" RSS icon that indicates that there is a web feed available. Clicking the icon opens the edit window. It was invented by a collaborative team of wiki enthusiasts, including Ward Cunningham, Jack Herrick, and many others.

The Wiki Way: Quick Collaboration on the Web is a 2001 book about wikis by Bo Leuf and Ward Cunningham. It was the first major book published about using wikis. Cunningham is the inventor of wikis, having created WikiWikiWeb, the first wiki website software. The book is about how to install/customize/manage wiki systems, followed by a perspective on the nature of wiki-style online communication.

A 3D printed firearm is a firearm that is mostly produced with a 3D printer. They can be classified by the type of 3D printers used: plastic, metal, or both. While plastic ones are usually used as improvised firearms that evade gun control, 3D-printed metal guns are more commonly thought as a way for legitimate gun manufacturers to exceed traditional design limitations.

WikiArt is an online, user-editable visual art encyclopedia. Based upon a statement in its 2013 financial report, the site appears to have been online since 2010.

Wikiloc is a website, launched in 2006, that offers for free GPS trails and waypoints that members can upload and share. This mashup shows the routes in frames showing Google Maps. The service is also available in Google Earth. There are mobile apps for Android and iPhone. The product has more than 4.5M members, is offered in many languages and has more than 11.6M tracks of dozens of activities in many countries and territories. Wikiloc began as a worldwide online reference for hiking.

Wikirating is a free, collaborative platform for credit ratings that aims to provide a transparent source for credit ratings of countries, companies and structured products. It is the first independent rating platform mainly based on community's contributions to feed data and information to establish independent, impartial and transparent ratings.

WikiStage is a video platform and a network of event organisers managed by the non-profit WikiStage Association. It aims to create a collaborative video platform for debate. Conferences around the world use the WikiStage platform to share their speaker’s videos. To connect talks with those of other speakers, the videos are grouped into a debate according to their topic. The debate wall allows users to watch and vote for short videos from different sources on the topic in question.

WikiTribune was a news wiki where volunteers wrote and curated articles about widely publicised news by proof-reading, fact-checking, suggesting possible changes, and adding sources from other, usually long established outlets. Jimmy Wales, co-founder of Wikipedia, announced the site in April 2017 as a for-profit site, not affiliated with Wikipedia or its support organisation, the Wikimedia Foundation. Until October 2018, WikiTribune employed journalists with established backgrounds in the profession who researched, syndicated, and reported news.