Virtual communities

StumbleUpon is a discovery engine (a form of web search engine) that finds and recommends web content to its users.

Pure is a dating service app for Apple iOS and Android created by Getpure Inc.

Last.fm is a music website, founded in the United Kingdom in 2002.

Orkut was a social networking website owned and operated by Google.

Digg is a news aggregator with a curated front page, aiming to select stories specifically for the Internet audience such as science, trending political issues, and viral Internet issues.

Mixi (ミクシィ mikushī, stylized as mixi) is an online Japanese social networking service.

Habrahabr (Russian: Хабрахабр) is a Russian collaborative blog with elements of social network about IT, Computer science and anything related to the Internet, owned by Thematic Media.

The Whole Earth 'Lectronic Link, normally shortened to The WELL, is one of the oldest virtual communities in continuous operation.

Kazaa Media Desktop (once stylized as "KaZaA", but now usually written "Kazaa") started as a peer-to-peer file sharing application using the FastTrack protocol licensed by Joltid Ltd.

Twinity is a 3D online virtual world.

Badoo is a dating-focused social networking service, founded in 2006 and headquarters in Soho, London.

App.net is an ad-free online social networking service and microblogging service which enables its users to write messages of up to 256 characters.

A video blog or video log, usually shortened to vlog /ˈvlɒɡ/, is a form of blog for which the medium is video, and is a form of web television.

Yahoo! GeoCities (also known as GeoCities) is a web hosting service, currently available only in Japan.

Slashdot (sometimes abbreviated as /.) is a social news website that originally billed itself as "News for Nerds.

Koinup is an image and video hosting service, web portal and online community for virtual world users.

An online community is a virtual community whose members interact with each other primarily via the Internet.

Playfire is a social gaming networking website targeted towards core video game players.

Tech Support Comedy, or TSC, is a website dedicated to frustrated tech support workers from all over the world and the customers they deal with constantly.

Trusera was a Seattle-based social networking startup founded in 2007 by Keith Schorsch, a former Amazon.

Uloop is a network of online marketplaces and university news websites for college students, featuring classified advertisements (with Housing, Jobs, Roommates, Internships, Textbooks, Test Prep, Tutors, and Study Abroad categories).

Underlight is a fantasy massively multiplayer online role-playing game (MMORPG).

Vokle is an embeddable Internet microsite application that allows speakers to broadcast live video to a virtual auditorium of viewers and take live video calls and text questions from the audience.

weRead, formerly iRead, is an online community of book enthusiasts.

Storenvy is an e-commerce platform which consists of an online store builder and social marketplace, with over 65,000 merchants and millions of products listed.

TVShow Time is an online service centered exclusively on television series.

The Campus Market is an online marketplace that is exclusive to college students.

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jog.fm is a free exercise music website, founded by Blendist LLC in Boston, Massachusetts in 2010.

Perpetuelle.com is a social networking website for watch owners, collectors and enthusiasts launched into beta in fall of 2008.

We Heart It is an image-based social network for inspiring images.

Internet identity (also called IID), or internet persona is a social identity that an Internet user establishes in online communities and websites.

Helium.com, Inc. was founded in 2006 as a Yahoo! Answers-style website created from user generated content paid on a revenue sharing model.

Bernie Singles is an online dating service where members can connect based on a mutual interest in American politician and junior United States senator Bernie Sanders.

The Bibliophile Mailing List is an electronic mailing list for sellers and collectors of rare, out-of-print and scarce books.

Experience Project is a free social networking website consisting of various online communities.

Figment is an online community and self-publishing platform for young writers.

Galaxiki is a web-based, free content virtual community web 2.

Kuro5hin (K5) (/kəˈroʊʒən/ corrosion) was a collaborative discussion website founded by Rusty Foster in 1999.

LifeKnot is a social networking website with a focus on shared interests and hobbies.

WinCustomize is a website that provides content for users to customize Microsoft Windows.

WorldMadeChannel is a Dutch TV project based on user-generated content (home video and photos) sent by viewers from all over the world.

Global Personals is an online dating company founded and headquartered in Windsor, UK.

Gaia Online is an English-language, anime-themed social networking and forums-based website.

Voat Inc /ˈvoʊt/ is an American news aggregator and social networking service where registered community members can submit content such as text posts and direct links.

Kaymu Pakistan is an online marketplace, providing C2C and B2C platform in Pakistan.

Napster was the name given to two music-focused online services.

Elfwood is a popular web-based alternative art gallery and online community devoted to original science fiction and fantasy art and writing.

OurProject.org (OP) is a web-based collaborative free content repository.

OkCupid (sometimes abbreviated as OKC) is an American-based international operating free online dating, friendship, and social networking website that features member-created quizzes and multiple-choice questions.

Tagged is a social discovery website based in San Francisco, California, founded in 2004.

Kanopy is an on-demand streaming video service for educational institutions that provides students and faculty access to a large collection of films.

SMJG is a charitable organization originating in Germany which provides education in the field of BDSM and sexuality for young adults and teenagers.

DatPiff is an online mixtape distribution platform owned by Idle Media Inc.

Open Diary (often abbreviated as "OD") was an online diary community, an early example of social networking software.

Ashley Madison, or The Ashley Madison Agency, is a Canada-based online dating service and social networking service marketed to people who are married or in committed relationships.

Dissernet (Russian: Диссернет) is a volunteer community network working to clean Russian science of plagiarism.

A bulletin board system, or BBS, is a computer server running software that allows users to connect to the system using a terminal program.

InterArtCenter social network is a popular online community for international digital and fine art artists.

Zoosk is an online dating service available in 25 languages and in more than 80 countries.

HealthBoards is a long-running social networking support group website.

MedHelp is an American private corporation that was founded in February 1994 and pioneered the field of consumer health information and communities on the Internet, before WebMD, Microsoft or Yahoo!.

Mobile Roadie is a self-service mobile app platform to create, customize and manage mobile apps.

MocoSpace is a mobile game community specifically focused on HTML5 for mobile, also known as a mobile social network.

Nirvino is an iPhone application and website devoted to reviews, ratings, and other information about wine.

Cellufun, briefly known as Tylted, is a social gaming community accessible from any mobile device, from the latest smartphones and tablets to the smallest feature phones.

Pengyou (Chinese: 朋友; pinyin: péngyǒu; literally "Friend") is a popular social network by Tencent, also well known for QQ Video, Tencent Weibo, QQ, Qzone, etc.

Match.com is an online dating service with web sites serving 25 countries in more than eight languages.

Here Comes Everybody: The Power of Organizing Without Organizations is a book by Clay Shirky published by Penguin Press in 2008 on the effect of the Internet on modern group dynamics and organization.

BlogTV is a live-streaming video blog service which was reintroduced by MadCow Media LLC, in January, 2016.

BeautifulPeople.com is an online dating service where applicants to the website are voted in or out by existing members of the opposite sex over a 48-hour period.

Dogster is a dog-themed social networking and forums-based website.

DontStayIn, commonly abbreviated to DSI, is a social networking site based around clubbing.

Dreamwidth is an online journal service based on the LiveJournal codebase.

Internet Relay Chat (IRC) is an application layer protocol that facilitates communication in the form of text.

Skyrock.com is a social networking site based in France that offers a free space on the web to allow its users to create blogs, add profiles, and exchange messages with other registered members.

itsmy is a pure mobile social gaming network which combines open mobile games and mobile communication between gamers.

JediMUD is a MUD, an online text-based role-playing game, one of the longest-running of its kind.