List of virtual communities with more than 1 million users
This is a list of notable active virtual communities with more than 1 million registered members.
| Name | Description or focus | Date launched | Registered users | Registration | Global Alexa page ranking |
| Avaaz | Global community and political activism | Open | N/A | ||
| BlackPlanet | Black Americans | Open | |||
| Blind | Employees | Open with verified work email | |||
| Bluesky | Microblogging | Open to people 13 and older | N/A | ||
| Busuu | Language learning community | Open | |||
| Buzznet | Music and pop-culture | Open | |||
| CafeMom | Mothers | Open to moms and moms-to-be | |||
| Care2 | Green living, social activism, animal rights | Open | |||
| CaringBridge | Not for profit providing free websites that connect family and friends during a serious health event, care and recovery. | Open to people 18 and older | |||
| Classmates.com | School, college, work and the military | Open to people 18 and older | |||
| CouchSurfing | Worldwide network for making connections between travelers and the communities they visit | Open | |||
| Cyworld | General, popular in South Korea | Open | |||
| DeviantArt | Art community | Open to people 13 and older | |||
| Duolingo | Language learning community and forums | Open to all ages. Forums open to people 13 and older | |||
| Draugiem.lv | General | Invitation only | |||
| Douban | Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music | Open | |||
| DXY.cn | Chinese online community for physicians, health care professionals, pharmacies and facilities | Open | |||
| English, baby! | Students and teachers of English as a second language | Open | |||
| General | Open to people 13 and older | ||||
| Fetlife | People who are into BDSM | Open to people "of legal age to see adult content" | |||
| Fishbrain | Mobile social network, fishing | Open | |||
| Flickr | Photo sharing, commenting, photography related networking, worldwide | Open | |||
| Fotki | Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration | Open | |||
| Foursquare | Location-based mobile social network | Open | |||
| Gaia Online | Anime and games, popular in the US, Canada and Europe, and moderately popular in Asia | Open to people 13 and older | |||
| Geni.com | Families, genealogy | Open | |||
| Goodreads | Library cataloging, book lovers | Open | |||
| GrabCAD | GrabCAD Community is the largest online CAD library, design and 3D printing tutorials, and a network of additive professionals | Open | N/A | ||
| Habbo | General for teens. Over 31 communities worldwide. Chat room and user profiles. | Open to people 13 and older | |||
| HER | Sapphic community app for queer women, non-binary and trans people. Community groups, online events and IRL events. 114 countries. 15 million users. | 2015 | Open to people 18 and over | ||
| hi5 | General, popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America | Open to people 13 and older | |||
| General | Open | ||||
| Kiwibox | General | Open to people 13 and older | |||
| Kobo | Reading platform and social network | Open | |||
| Last.fm | Music | Open | |||
| LibraryThing | Book lovers | Open to people 13 and older | |||
| LINE | Japan, Indonesia, Taiwan, and Thailand | Open | N/A | ||
| LinguaLeo | Online English language learning website, popular among the Russian-speaking diaspora | Open | |||
| Business and professional networking | Open to people 18 and older | ||||
| LiveJournal | Blogging, popular in Russia and among the Russian-speaking diaspora abroad | Open | |||
| Mastodon | An open-source, self-hosted and globally interconnected microblogging community | 2016 | Open, depends on the instance | N/A | |
| mixi | Japan | Open | |||
| MocoSpace | Mobile community, worldwide | 2005 | Open to people 14 and older | ||
| MyHeritage | Family-oriented social network service | 2003 | Open | ||
| MyLife | Locating friends and family, keeping in touch | 2002 | Open | ||
| Myspace | General | Open to ages 13 and older | |||
| Odnoklassniki | Connecting with old classmates, popular in Russia and former Soviet republics | 2006 | Open | ||
| Open Diary | First online blogging community, founded in 1998 | Open to people 13 and older | |||
| Ravelry | Knitting and crochet | 2007 | Open | ||
| Social news, link sharing and commenting | 2005 | Open | |||
| Sina Weibo | Social microblogging site in China | Open | |||
| SoundCloud | Repository of original music pieces and networking | 2008 | Open | ||
| Stack Overflow | Question and answer knowledge market site for programmers | 2008 | Open to people 13 and older | ||
| Steemit | Blockchain-based social networking | 2016 | Open | ||
| Tagged | General | 2004 | Open | ||
| General, microblogging, RSS, updates | Open to all ages | ||||
| Tylted | Mobile social game network | Open to people 14 and older | |||
| Vkontakte | General, including music upload, listening and search. Popular in Russia and former Soviet republics. | Open | |||
| Vampirefreaks.com | Gothic and industrial subculture | Open to users 13 and over | |||
| Viadeo | Global social and campus networking available in English, French, German, Spanish, Italian and Portuguese | 2004 | Open/lift | ||
| Business | Open |