Multilingual websites

Wikipedia is a free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and Larry Sanger in 2001, Wikipedia has been hosted since 2003 by the Wikimedia Foundation, an American nonprofit organization funded mainly by donations from readers. Wikipedia is the largest and most-read reference work in history. According to Jimmy Wales, its mission is to make the sum of all human knowledge available to every person in the world.

Facebook is an American social networking service owned by the American technology conglomerate Meta Platforms. It was founded in 2004 by Mark Zuckerberg, along with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. The name Facebook derives from the face book directories often given to American university students.

YouTube is an American online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Chad Hurley, Jawed Karim, and Steve Chen, who were former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google itself. In January 2024, YouTube had reached more than 2.7billion monthly active users, who collectively consumed more than one billion hours of video content every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and , there were approximately

X, formerly known as Twitter, is an American microblogging and social networking service, headquartered in Bastrop, Texas. It is one of the world's largest social media platforms and one of the most-visited websites. Users can share short text messages, images, and videos in short posts and like other users' content. The platform also includes direct messaging, video and audio calling, bookmarks, lists, communities, Grok chatbot integration, job search, and a social audio feature. Users can vote on context added by approved users using the Community Notes feature.

online repository of free-use image, audio, and other media files

Wiktionary ( , ; rhyming with "dictionary") is a multilingual, web-based project to create a free content dictionary of terms (including words, phrases, proverbs, linguistic reconstructions, etc.) in a large number of natural languages and a number of artificial languages. These entries may contain definitions, images for illustration, pronunciations, etymologies, inflections, usage examples, quotations, related terms, and translations of terms into other languages, among other features. It is collaboratively edited by volunteers via a wiki. Its name is a portmanteau of the words wiki and dict

Wikisource is an online wiki-based digital library of free-content textual sources operated by the Wikimedia Foundation. Wikisource is the name of the project as a whole; it is also the name for each instance of that project, one for each language. The project's aim is to host all forms of free text, in many languages, and translations. Originally conceived as an archive to store useful or important historical texts, it has expanded to become a general-content library. The project officially began on November 24, 2003, under the name Project Sourceberg, a play on Project Gutenberg. The name Wi

MediaWiki is a free and open-source wiki software system originally developed by Magnus Manske and released for use on Wikipedia on January 25, 2002, and further enhanced by Lee Daniel Crocker, after which development 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. Besides its usage on Wikimedia sites, MediaWiki has bee

thumb|300px|right|Presentation about Wikiquote during the Wiki Indaba 2023 conference in Agadir, [[Morocco]] Wikiquote is part of a family of wiki-based projects run by the Wikimedia Foundation using MediaWiki software. The project's objective is to collaboratively produce a vast reference of quotations from prominent people, books, films, proverbs, etc. and writings about them. The website aims to be as accurate as possible regarding the provenance and sourcing of the quotations.

thumb|right|Growth of the eight largest Wikibooks sites (by language), July 2003–January 2010

Google Search is a search engine operated by Google. It allows users to search for information on the Web by entering keywords or phrases. Google Search uses algorithms to analyze and rank websites based on their relevance to the search query. Google Search is the most-visited website in the world. As of 2025, Google Search has a 90% share of the global search engine market. Approximately 24.1% of Google's monthly global traffic comes from the United States, 5.6% from India, 5.5% from Japan, 4.8% from Brazil, and 3.7% from the United Kingdom according to data provided by Similarweb. The same source reports that 58% of users are male and 42% are female.

Wikinews is a free-content news wiki and a project of the Wikimedia Foundation that gathers and reports news collaboratively through user-created content. Wikipedia co-founder Jimmy Wales has distinguished Wikinews from Wikipedia by saying, "On Wikinews, each story is to be written as a news story as opposed to an encyclopedia article."

Wikiversity is a Wikimedia Foundation project that supports learning communities, their learning materials, and resulting activities. It differs from Wikipedia in that it offers tutorials and other materials for the fostering of learning, rather than an encyclopedia. It is available in many languages.

Wikispecies is a wiki-based online project supported by the Wikimedia Foundation. Its aim is to create a comprehensive open content catalog of all species; the project is directed at scientists, rather than at the general public. Jimmy Wales stated that editors are not required to fax in their degrees, but that submissions will have to pass muster with a technical audience. Wikispecies is available under the GNU Free Documentation License and CC BY-SA 4.0.

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".

web search engine from Microsoft

volunteer effort to digitize and archive books

Pornhub is a Canadian-owned Internet pornography video-sharing website, one of several owned by adult entertainment conglomerate Aylo (formerly MindGeek / Manwin / Mansef). As of February 2026, Pornhub is the 22nd-most-visited website in the world and the most-visited pornography website.

Flickr ( ) is an image and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was for a time a common way for amateur and professional photographers to host high-resolution photos. Flickr was owned by Yahoo! from 2005 and has been owned by SmugMug since 2018.

DMOZ or DMoz (stylized dmoz in its logo; from directory.mozilla.org, an earlier domain name) was a multilingual open-content directory of World Wide Web links. The site and community who maintained it were also known as the Open Directory Project (ODP). It was owned by AOL (now a part of Yahoo! Inc) but constructed and maintained by a community of volunteer editors.

MusicBrainz is a project by the MetaBrainz Foundation that aims to create a collaborative music database that is similar to the freedb project. MusicBrainz was founded due to the restrictions placed on the Compact Disc Database (CDDB), a database for software applications to look up audio CD information on the Internet. MusicBrainz has expanded its goals beyond serving as a CD metadata repository, evolving into a structured online database for music information, including details about artists, performers, and songwriters.

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.

Quora is an American social question-and-answer website and online knowledge market headquartered in Mountain View, California. It was founded on June 25, 2009, and made available to the public on June 21, 2010. Users can post questions, answer questions, and comment on answers that have been submitted by other users.

Airbnb, Inc. ( , an abbreviation of its original name, "Airbed and Breakfast") is an American company operating an online marketplace for short-and-long-term homestays, experiences and services in various countries and regions. It acts as a broker and charges a commission from each booking. Airbnb was founded in 2008 by Brian Chesky, Nathan Blecharczyk, and Joe Gebbia.

MedlinePlus is an online information service produced by the United States National Library of Medicine. The service provides curated consumer health information in English and Spanish with select content in additional languages. The site brings together information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), other U.S. government agencies, and health-related organizations. There is also a site optimized for display on mobile devices, in both English and Spanish. In 2015, about 400 million people from around the world used MedlinePlus. The service is f

HuffPost (The Huffington Post until 2017, itself often abbreviated as HuffPo) is a United States progressive news website, with localized and international editions. The site offers news, satire, blogs, and original content, and covers politics, business, entertainment, environment, technology, popular media, lifestyle, culture, comedy, healthy eating, young women's interests, and local news featuring columnists. It was created to provide a progressive alternative to conservative news websites such as the Drudge Report. The site contains its own content and user-generated content via video blo

FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web. Over time it has "evolved into a dynamic and versatile ecological tool" that is widely cited in scholarly publications.

translatewiki.net, formerly named Betawiki, is a web-based translation platform powered by the Translate extension for MediaWiki. It can be used to translate various kinds of texts but is commonly used for creating localisations for software interfaces.

Russian government news agency

Chess.com is an internet chess server. The largest chess platform in the world, the site operates on a freemium model in which some features are available for free, and others are available via subscription. Users can play live online chess against other users in daily, rapid, blitz, or bullet time controls, with a number of chess variants available. Additionally, the platform offers play against chess engines, computer analysis, chess puzzles, and teaching resources.

Lichess (, ) is an Internet chess server that is free and open-source, run by a non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play games to earn a rating on Lichess. Lichess is ad-free and all the features are available for free, as the site is funded by donations from patrons, who receive a special badge as thanks for their support. Features include chess puzzles, computer analysis, tournaments and chess variants.

online translator

web service providing access to resources of national libraries across Europe

Israel-based online newspaper

Parler (pronounced "parlor") is an American alt-tech social networking service associated with conservatives. Launched in August 2018, Parler marketed itself as a free speech-focused and unbiased alternative to mainstream social networks such as Twitter and Facebook. Journalists described Parler as an alt-tech alternative to Twitter, with its users including those banned from mainstream social networks or who oppose their moderation policies.

American alt-tech social media service

Meduza (Russian: Медуза, named after the Greek mythological figure Medusa) is a Russian and English-language independent news website, headquartered in Riga, Latvia. It was founded in 2014 by a group of former employees of the then-independent Lenta.ru news website. Free mobile applications for iOS, Windows Phone, and Android became the basis of the media.

[[File:Pays Qwant.svg|thumb|300px|Availability of Qwant by country:

LibraryThing is a social cataloging web application for storing and sharing book catalogs and various types of book metadata. It is used by authors, individuals, libraries, and publishers.

Internet Archive

Memrise is a British language platform that uses spaced repetition of flashcards to increase the rate of learning. It is based in London, UK.

web search engine by Yahoo!

Busuu is a language learning platform on web, Windows iOS and Android that allows users to interact with native speakers. In 2021, Chegg acquired Busuu for $436 million.

thumb|Previous Hi5 logo used until 2010. thumb|250px|Map of countries with most users of Hi5 hi5 is an American social networking service based in San Francisco, California. It is owned by The Meet Group.

Pixabay.com is a free stock photography and royalty-free stock media website. It is used for sharing photos, illustrations, vector graphics, film footage, stock music, sound effects, 3D models and animated GIFs, exclusively under the custom Pixabay Content License, which generally allows the free use of the material with some restrictions. The site's images are allowed to be used for free without attribution, and allowed to be modified and adapted into new works. Pixabay does not allow users to sell or distribute the content as is, use it commercially if it contains recognizable trademarks, or

Russian newspaper

South Korean live video streaming service

online, searchable, encyclopedic dictionary of computing subjects

SlideShare is an American hosting service, now owned by Scribd, for professional content including presentations, infographics, documents, and videos. Users can upload files privately or publicly in PowerPoint, Word, or PDF format. Content can then be viewed on the site itself, on mobile devices or embedded on other sites. SlideShare also provides users the ability to rate, comment on, and share the uploaded content. Launched on October 4, 2006, the service positioned itself to be similar to YouTube, but for presentations. The company was acquired by LinkedIn in 2012, and then by Scribd in 202

privacy-focused social network

TuneIn (formerly and also known as TuneIn Radio) is an American internet radio and podcasting service owned by Canadian media company Stingray Group. The service offers access to various radio stations (including terrestrial and online radio stations), as well as on-demand audio content such as podcasts and audiobooks.

SIKART Lexicon on Art in Switzerland is an online encyclopedia of historical and contemporary art in Switzerland. SIKART is published by the , which is headquartered in Zurich.

Webnode () is a cloud-based website builder that allows individuals and organizations to create and manage websites using a web-based editor, without the need to install or configure additional software. The platform uses a visual drag-and-drop interface and supports the creation of websites that adapt to different screen sizes and without requiring programming knowledge.

BlaBlaCar is a French online marketplace for carpooling headquartered in Paris. Its website and mobile apps connect drivers and passengers willing to travel together between cities and share the cost of the journey, in exchange for a commission of between 18% and 21%. It also operates BlaBlaCar Bus, an intercity bus service. The platform has 26 million active members and is available in Europe and Latin America.

Wafa (, , an acronym of , ), also referred to in English as the Palestine News Agency and the Palestinian News & Info Agency, is the official state-run news agency of the Palestinian National Authority (PNA). Before the formation of the PNA in 1994, Wafa was the official news agency of the Palestine Liberation Organization.

thumb|The website during the presidency of Bill Clinton in 1995 thumb|The website following the first inauguration of Barack Obama in 2009

LyricWiki (also known as Lyrically or LyricWikia) was an online wiki-based lyrics database and encyclopedia. In March 2013, it was the seventh largest MediaWiki installation with over 2,000,000 pages including 1.5 million songs. Prior to its shutdown, users on the site could view, edit, and discuss the lyrics of songs, which were also available for purchase from links on the site. Users were told to be mindful of copyright while contributing, and copyright violations were removed upon request. All the lyrics on LyricWiki were licensed through LyricFind.

Babbel GmbH, operating as Babbel, is a German company operating a subscription-based language learning software and e-learning platform.

Israeli media network

international radio service of the Canadian Broadcasting Corporation