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/Focus | Date launched | Registered users | Registration | Global Alexa Page ranking |
| Bebo | General | 117000000 | Open to people 13 and older | 4169 | |
| BlackPlanet | Black Americans | 20000000 | Open | 7193 | |
| Blind | Employees | 2000000 | Open with verified work email | 43680 | |
| Busuu | Language learning community | 12000000 | Open | 8049 | |
| Buzznet | Music and pop-culture | 10000000 | Open | 6955 | |
| CafeMom | Mothers | 1250000 | Open to moms and moms-to-be | 1293 | |
| Care2 | Green living, social activism, animal rights | 9961947 | Open | 1930 | |
| CaringBridge | Not for profit providing free websites that connect family and friends during a serious health event, care and recovery. | 9500000 | Open to people 18 and older | 4279 | |
| Classmates.com | School, college, work and the military | 50000000 | Open to people 18 and older | 3284 | |
| CouchSurfing | Worldwide network for making connections between travelers and the communities they visit. | 18000000 | Open | 2231 | |
| Cyworld | General. Popular in South Korea. | 24000000 | Open | 1616 | |
| delicious | Social bookmarking allowing users to locate and save websites that match their own interests. | 8822921 | Open | 436 | |
| DeviantArt | Art community | Open to people 13 and older | 131 | ||
| Duolingo | Language learning community and forums | Open to all ages. Forums open to people 13 and older | 547 | ||
| Draugiem.lv | General | 2600466 | Invitation only | 2698 | |
| douban | Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music. | 46850000 | Open | 106 | |
| DXY.cn | Chinese online community for physicians, health care professionals, pharmacies and facilities | 2000000 | Open | 8367 | |
| Edmodo | Social learning network for schools | 50000000+ | Open to students, teachers and parents | 2367 | |
| English, baby! | Students and teachers of English as a second language | 1600000 | Open | 29585 | |
| eToro | Social Investing, Finance | Open | 854 | ||
| General: Photos, Videos, Blogs, Apps. | Open to people 13 and older | 3 | |||
| Fetlife | People who are into BDSM | 1200000 | Open to people "of legal age to see adult content" | 4131 | |
| Fishbrain | Mobile Social network, Fishing | 2200000 | Open | 436164 | |
| Flixster | Movies | 63000000 | Open to people 13 and older | 4012 | |
| Flickr | Photo sharing, commenting, photography related networking, worldwide | 32000000 | Open | 48 | |
| Fotki | Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration. | 1632565 | Open | 8011 | |
| Fotolog | Photoblogging. Popular in South America and Spain | 20000000 | Open | 3168 | |
| Foursquare | Location-based mobile social network | 20000000 | Open | 817 | |
| Friendster | General. Popular in Southeast Asia. No longer popular in the western world | 90000000 | Open to people 16 and older. | 12167 | |
| Gaia Online | Anime and games. Popular in US, Canada and Europe. Moderately popular around Asia. | 23523663 | Open to people 13 and older | 6277 | |
| Geni.com | Families, genealogy | 15000000 | Open | 5958 | |
| GetGlue | Social network for entertainment | 2000000 | Open | 3735 | |
| Goodreads | Library cataloging, book lovers | 13000000 | Open | 327 | |
| Habbo | General for teens. Over 31 communities worldwide. Chat room and user profiles. | 268000000 | Open to people 13 and older | 15255 | |
| hi5 | General. Popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the U.S. | 80000000 | Open to people 13 and older. | 902 | |
| Hyves | General, mostly popular in the Netherlands. | 10097000 | Open | 2243 | |
| Ibibo | Talent based social networking site that allows to promote one's self and also discover new talent. Most popular in India. | 2007 | 3500000 | Open | 1143 |
| Itsmy | Mobile community worldwide, blogging, friends, personal TV-shows | 2008 | 2500000 | 770100 | |
| iWiW | Hungary | 4000000 | Invite-only | 3831 | |
| Jiepang | Location-based mobile social network. In Chinese language | 3000000 | Open | 14790 | |
| Kiwibox | General. | 2400000 | Open to people 13 and older | 104563 | |
| Kobo | Reading platform and social network | 14500000 | Open | 7277 | |
| Koofers | Social studying network for college students | 1000000 | Open | 97090 | |
| Last.fm | Music | 30000000 | Open | 772 | |
| LibraryThing | Book lovers | 1300000 | Open to people 13 and older | 10800 | |
| LinguaLeo | Online English language learning website. Popular among the Russian-speaking diaspora. | 3749061 | Open | 7480 | |
| Business and professional networking | 450000000 | Open to people 18 and older | 12 | ||
| LiveJournal | Blogging. Popular in Russia and among the Russian-speaking diaspora abroad. | 17564977 | Open | 115 | |
| Livemocha | Online language learning | 2007 | 5000000 | Open | 4100 |
| Mastodon | An open-source, self-hosted and globally interconnected microblogging community | 2016 | 1600000 | Open, depends on the instance | NA |
| mixi | Japan | 24323160 | Open | 232 | |
| Miiverse | Social Network for Nintendo's Wii U home console and 3DS handheld family where users can post about games and ask for help on a particular game. | 4500000 | Nintendo Network Members Only. | NA | |
| MocoSpace | mobile community, worldwide | 2005 | 3000000 | Open to people 14 and older | 9882 |
| MyHeritage | family-oriented social network service | 2003 | 30000000 | Open | 3756 |
| MyLife | Locating friends and family, keeping in touch | 2002 | 51000000 | Open | 1765 |
| Myspace | General | 30000000+ | Open to ages 13 and older. | 161 | |
| Nasza-klasa.pl | School, college and friends. Popular in Poland | 2006 | 11000000 | Open | 75145 |
| Netlog | General. Popular in Europe, Turkey, the Arab World and Canada's Québec province. Formerly known as Facebox, Bingbox and Redbox. | 1999 | 95000000 | Open to people 13 and older | 2621 |
| Nexopia | Canada | 2003 | 1400000 | Open to people 13 and older | 25241 |
| Odnoklassniki | Connect with old classmates. Popular in Russia and former Soviet republics | 2006 | 45000000 | Open | 65 |
| Open Diary | First online blogging community, founded in 1998 | 5000000 | Open to people 13 and older | 28134 | |
| Plaxo | Aggregator | 50000000 | Open | 5310 | |
| Ravelry | Knitting and crochet | 2007 | 6700000 | Open | 5189 |
| Social news, link sharing and commenting | 2005 | 36000000 | Open | 8 | |
| Renren | Significant site in China. Was known as 校内 until August 2009. | 2005 | 160000000 | Open | 95 |
| Sina Weibo | Social microblogging site in Mainland China. | Open | 28 | ||
| Skyrock | Social Network in French-speaking world | 2002 | 22000000 | Open | 710 |
| Sonico.com | General. Popular in Latin America and Spanish and Portuguese speaking regions. | 2007 | 50000000 | Open to people 13 and older | 2676 |
| SoundCloud | Repository of original music pieces and networking. | 2008 | 10000000 | Open | 299 |
| Stack Overflow | Question and answer knowledge market site for programmers. | 2008 | 12,000,000 | Open to people 13 and older | 41 |
| Steemit | Blockchain based social networking. | 2016 | 1300000 | Open | 5577 |
| StudiVZ | University students, mostly in the German-speaking countries. School students and those out of education sign up via its partner sites schülerVZ and meinVZ. | 2005 | 17000000 | NA | |
| Tagged | General. | 2004 | 100000000 | Open | 288 |
| Taringa! | General | 2004 | 11000000 | Open to people 13 and older | 214 |
| TravBuddy.com | Travel | 1588000 | Open to people 18 and older | 21523 | |
| General. Micro-blogging, RSS, updates | 500000000 | Open to all ages | 12 | ||
| Tylted | Mobile social game network | 3000000 | Open to people 14 and older | 737508 | |
| Vkontakte | General, including music upload, listening and search. Popular in Russia and former Soviet republics. | 208833674 | Open | 38 | |
| Vampirefreaks.com | Gothic and industrial subculture | 1931049 | Open to users 13 and over | 21052 | |
| Viadeo | Global Social Networking and Campus Networking available in English, French, German, Spanish, Italian and Portuguese | 2004 | 35000000 | Open/lift | 435 |
| WAYN | Travel and lifestyle | 10000000 | Open to people 18 and older | 1367 | |
| We Heart It | Image-based social network | 25000000 | Open to ages 13 and older. | 823 | |
| WeeWorld | Teenagers - 10 to 17 | 2000 | 30000000 | Open to ages 13 and older. | 18317 |
| Xanga | Blogs and "metro" areas | 27000000 | Open | 3943 | |
| Business | 11100000 | Open | 270 |
;Defunct
| Name | Description/Focus | Date launched | Date closed | Peak registered users | Registration |
| Friends Reunited | UK based. School, college, work, sport and streets | 23800000 | Open to people 13 and older | ||
| Orkut | General. Owned by Google Inc. Popular in India and Brazil. | 100000000 | Open to people 18 and older, | ||
| Raptr | Video games | 2008 | July 2018 | 25664 | Open |
| StumbleUpon | Stumble through websites that match users' selected interests | June 30, 2018 | 20000000 | Open |