List of all Social Networking Sites (Sorted Alphabetically)
| Name | Description/Focus | Registered users | Global Alexa Page ranking |
| 43 Things | Goal setting and achievement | 3,000,000 | 12,914 |
| About.me | Social networking site | 5,000,000 | 1,447 |
| Academia.edu | Social networking site for academics/researchers | 211,000 | 1,995 |
| Advogato | Free and open source software developers | 13,575 | 292,620 |
| aNobii | Books | 26,939 | |
| AsianAvenue | A social network for the Asian American community | 170,384 | |
| aSmallWorld | European jet set and social elite world-wide | 550,000 | 580,060 |
| Athlinks | Running, Swimming | 139,458 | 69,170 |
| Audimated.com | Independent music | 656,507 | |
| Bebo | General | 117,000,000 | 4,169 |
| Biip.no | Norwegian community | 430,000 | 81,916 |
| BlackPlanet | Black Americans | 20,000,000 | 7,193 |
| Blauk | Anyone who wants to tell something about a stranger or acquaintance. | 1,081,215 | |
| Blogster | Blogging community | 85,579 | 12,048 |
| Bolt.com | General | 589,595 | |
| Busuu | Language learning community (headquartered in Madrid, Spain) | 12,000,000 | 4,976 |
| Buzznet | Music and pop-culture | 10,000,000 | 6,955 |
| CafeMom | Mothers | 1,250,000 | 1,293 |
| Care2 | Green living and social activism | 9,961,947 | 1,930 |
| CaringBridge | Not for profit providing free websites that connect family and friends during a serious health event, care and recovery. | 9,500,000 | 4,279 |
| Classmates.com | School, college, work and the military | 50,000,000 | 3,284 |
| Cloob | General. Popular in Iran | 749 | |
| CouchSurfing | Worldwide network for making connections between travelers and the communities they visit. | 2,967,421 | 2,231 |
| CozyCot | East Asian and Southeast Asian women | 150,000 | 36,959 |
| Cross.tv | Faith Based social network for Christian believers from around the world | 450,000 | 53,394 |
| Crunchyroll | Anime and forums. | 5,721 | |
| Cyworld | General. Popular in South Korea. | 24,000,000 | 1,616 |
| DailyBooth | Photo-blogging site where users upload a photo every day | 5,963 | |
| DailyStrength | Medical & emotional support community – Physical health, Mental health, Support groups | 10,511 | |
| delicious | Social bookmarking allowing users to locate and save websites that match their own interests | 8,822,921 | 436 |
| deviantART | Art community | 22,000,000 | 131 |
| Diaspora* | Decentralized, privacy aware, general (open source) | 370,000 | 36,792 |
| didlr | Drawing service | 204,515 | 2,869,116 |
| Disaboom | People with disabilities (Amputee, cerebral palsy, MS, and other disabilities) | 218,135 | |
| Dol2day | Politic community, Social network, Internet radio (German-speaking countries) | 40,200 | 385,237 |
| DontStayIn | Clubbing (primarily UK) | 86,535 | |
| douban | Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music. | 46,850,000 | 106 |
| Draugiem.lv | General (primarily LV, LT, HU) | 2,600,466 | 2,698 |
| DXY.cn | Chinese online community for physicians, health care professionals, pharmacies and facilities | 2,000,000 | 8,367 |
| Elftown | Community and wiki around Fantasy and sci-fi. | 185,000 | 43,277 |
| Elixio | Business executives jet set and global elite. | 80,000 | 545,268 |
| English, baby! | Students and teachers of English as a second language | 1,600,000 | 29,585 |
| Eons.com | For baby boomers and mature internet users age 40 and beyond. | 73,767 | |
| Epernicus | For research scientists | 798,086 | |
| eToro | Social Investing, Finance | 2,500,000 | 1,591 |
| Experience Project | Life experiences | 2,658 | |
| Exploroo | Travel Social Networking. | 163,545 | |
| General: Photos, Videos, Blogs, Apps. | 1,000,000,000 | 2 | |
| Faceparty | General. Popular UK. | 200,000 | 163,639 |
| Faces.com | Adult Social Network, Mainly UK & USA | 149,839 | |
| Fetlife | People who are into BDSM | 2,701,715 | 4,131 |
| FilmAffinity | Movies and TV Series | 250,000 | 3,151 |
| Filmow | Movies and TV Series | 44,630 | |
| FledgeWing | Entrepreneural community targeted towards worldwide university students | 696,513 | |
| Flickr | Photo sharing, commenting, photography related networking, worldwide | 32,000,000 | 48 |
| Flixster | Movies | 63,000,000 | 4,012 |
| Focus.com | Business to Business, worldwide | 850,000 | 12,114 |
| Formspring | social Q&A website | 290,000,000 | 4,325 |
| Fotki | Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend’s feed, audio comments and unlimited custom design integration. | 1,632,565 | 8,011 |
| Fotolog | Photoblogging. Popular in South America and Spain | 20,000,000 | 3,168 |
| Foursquare | Location based mobile social network | 20,000,000 | 817 |
| Friendica | Distributed, federated, privacy aware, open source, general | 354,946 | |
| Friends Reunited | UK based. School, college, work, sport and streets | 19,000,000 | 29,239 |
| Friendster | General. Popular in Southeast Asia. No longer popular in the western world | 90,000,000 | 12,167 |
| Frühstückstreff | General | 14,800 | 1,827,621 |
| Fuelmyblog | Blogging community | 50,000 | 85,547 |
| FullCircle | Geosocial networking and location-based services portal for mobile devices | 1,167,425 | |
| Gaia Online | Anime and games. Popular in USA, Canada and Europe. Moderately popular around Asia. | 23,523,663 | 6,277 |
| GamerDNA | Computer and video games | 310,000 | 59,730 |
| Gapyear.com | Travel social network | 74,763 | |
| Gather.com | Article, picture, and video sharing, as well as group discussions | 465,000 | 3,062 |
| Gays.com | Social network for LGBT community, Guide for LGBT bars, restaurants, clubs, shopping | 100,000 | 224,302 |
| Geni.com | Families, genealogy | 15,000,000 | 5,958 |
| GetGlue | Social network for entertainment | 2,000,000 | 3,735 |
| Gogoyoko | Fair play in Music – Social networking site for musicians and music lovers | 145,552 | |
| Goodreads | Library cataloging, book lovers | 13,000,000 | 327 |
| Goodwizz | Social network with matchmaking and personality games to find new contacts. Global, based in France. | 110,000 | 597,008 |
| Google+ | General | 500,000,000 | NA |
| GovLoop | For people in and around government | 138,576 | |
| Grono.net | Poland | 2,000,000 | 395,036 |
| Habbo | General for teens. Over 31 communities worldwide. Chat room and user profiles. | 268,000,000 | 15,255 |
| hi5 | General. Popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the USA. | 80,000,000 | 902 |
| Hospitality Club | Hospitality | 328,629 | 99,562 |
| Hotlist | Geo-Social Aggregator rooted in the concept of knowing where users’ friends are, were, and will be. | 80,000 | 155,811 |
| HR.com | Social networking site for Human Resources professionals | 194,000 | 79,591 |
| Hub Culture | Global influencers focused on worth creation | 20,000 | 152,756 |
| Hyves | General, mostly popular in the Netherlands. | 10,097,000 | 2,243 |
| Ibibo | Talent based social networking site that allows to promote one’s self and also discover new talent. Most popular in India. | 3,500,000 | 1,143 |
| Identi.ca | Twitter-like service popular with hackers and software freedom advocates. | 395,695 | 7,290 |
| Indaba Music | Online collaboration for musicians, remix contests, and networking. | 350,000 | 45,039 |
| A photo and video sharing site | 150,000,000 | 41 | |
| IRC-Galleria | Finland | 505,000 | 36,982 |
| italki.com | Language learning social network. 100+ languages. | 500,000 | 18,956 |
| Itsmy | Mobile community worldwide, blogging, friends, personal TV-shows | 2,500,000 | 770,100 |
| iWiW | Hungary | 4,000,000 | 3,831 |
| Jaiku | General. Microblogging. Owned by Google | 62,910 | |
| Jiepang | Location based mobile social network. In Chinese language | 3,000,000 | 14,790 |
| Kaixin001 | General. In Simplified Chinese; caters for mainland China users | 284 | |
| Kiwibox | General. | 2,400,000 | 104,563 |
| Lafango | Talent-Focused media sharing site | 161,778 | |
| LaiBhaari | Marathi social networking | 250,000 | 952,782 |
| Last.fm | Music | 30,000,000 | 772 |
| LibraryThing | Book lovers | 1,300,000 | 10,800 |
| Lifeknot | Shared interests, hobbies | 1,071,686 | |
| Business and professional networking | 200,000,000 | 12 | |
| LinkExpats | Social networking website for expatriates. 100+ countries. | 800,451 | |
| Listography | Lists. Autobiography | 92,525 | |
| LiveJournal | Blogging. Popular in Russia and among the Russian-speaking diaspora abroad. | 17,564,977 | 115 |
| Livemocha | Online language learning | 5,000,000 | 4,100 |
| Makeoutclub | General | 756,300 | |
| MEETin | General | 318,979 | |
| Meettheboss | Business and Finance community, worldwide. | 315,513 | |
| Meetup (website) | General. Used to plan offline meetings for people interested in various activities | 481 | |
| MillatFacebook | General, Created in Response to Facebook | 461,200 | 236,663 |
| mixi | Japan | 24,323,160 | 232 |
| MocoSpace | mobile community, worldwide | 3,000,000 | 9,882 |
| MOG | Music | 13,955 | |
| MouthShut.com | Social Network, social media, consumer reviews | 3,340 | |
| Mubi | Auteur cinema | 200,000 | 18,225 |
| My Opera | Blogging, mobile blogging, photo sharing, connecting with friends, Opera Linkand Opera Unite. Global | 7,300,000 | NA |
| MyHeritage | family-oriented social network service | 30,000,000 | 3,756 |
| MyLife | Locating friends and family, keeping in touch (formerly Reunion.com) | 51,000,000 | 1,765 |
| Myspace | General | 30,000,000 | 161 |
| Nasza-klasa.pl | School, college and friends. Popular in Poland | 11,000,000 | 75,145 |
| Netlog | General. Popular in Europe, Turkey, the Arab World and Canada’s Québec province. Formerly known as Facebox and Redbox. | 95,000,000 | 545 |
| Nexopia | Canada | 1,400,000 | 25,241 |
| NGO Post | Non-Profit news sharing and networking, mainly in India | 15,000 | 42,076 |
| Ning | Users create their own social websites and social networks | 378 | |
| Odnoklassniki | Connect with old classmates. Popular in Russia and former Soviet republics | 45,000,000 | 65 |
| Open Diary | First online blogging community, founded in 1998 | 5,000,000 | 28,134 |
| Orkut | General. Owned by Google Inc. Popular in India and Brazil. | 100,000,000 | 319 |
| OUTeverywhere | Gay/LGBTQ Community | 445,440 | |
| Partyflock | Dutch virtual community for people interested in house music and other electronic dance music | 321,125 | 16,828 |
| PatientsLikeMe | Online community for patients with life-changing illnesses to find other patients like them, share their data with others, and learn more about their condition to improve their outcome. | 109,587 | 69,514 |
| Pingsta | Collaborative platform for the world’s Internetwork Experts | 2,533,640 | |
| Online pinboard for organizing and sharing things you love | 38 | ||
| Plaxo | Aggregator | 50,000,000 | 5,310 |
| Playfire | Computer and video games | 38,259 | |
| Playlist.com | General, Music | 8,026 | |
| Plurk | Micro-blogging, RSS, updates. Very popular in Taiwan | 1,991 | |
| Poolwo | Social networking site from India | 5,305 | 764,227 |
| Qapacity | A business-oriented social networking site and a business directory | 20,640 | |
| Quechup | General, friendship, dating | 82,914 | |
| Qzone | General. In Simplified Chinese; caters for mainland China users | 480,000,000 | NA |
| Raptr | Video games | 25,664 | |
| Ravelry | Knitting and crochet | 3,000,000 | 2,334 |
| Renren | Significant site in China. Was known as 校内 (Xiaonei) until August 2009. | 160,000,000 | 95 |
| ReverbNation.com | Social network for musician and bands | 500,000 | 1,806 |
| Ryze | Business | 500,000 | 71,324 |
| ScienceStage | Science-oriented multimedia platform and network for scientists | 61,668 | |
| Sgrouples | General, with focus on privacy rights | 258,091 | |
| ShareTheMusic | Music Community. Sharing and listening to music for free and legally | 612,429 | |
| Shelfari | Books | 18,152 | |
| Sina Weibo | Social microblogging site in Mainland China. | 300,000,000 | 28 |
| Skoob | Collaborative social network for Brazilian readers | 420,000 | 28,449 |
| Skyrock | Social Network in French-speaking world | 22,000,000 | 710 |
| SocialVibe | Social Network for Charity | 435,000 | 101,364 |
| Sonico.com | General. Popular in Latin America and Spanish and Portuguese speaking regions. | 50,000,000 | 2,676 |
| SoundCloud | Repository of original music pieces and networking. | 10,000,000 | 299 |
| Spaces | Russian Social Network targeted to mobile phone users | 9,953 | |
| Stage 32 | US-based social network and educational site for creative professionals in film, television and theater | 175,000 | 35,382 |
| Stickam | Live video streaming and chat. | 9,000,000 | 9,201 |
| Students Circle Network | A Social Network connecting students, teachers and institutions to course resources, study groups and learning spaces. | 345,110 | |
| 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. | 17,000,000 | 7,080 |
| StumbleUpon | Stumble through websites that match users’ selected interests | 20,000,000 | 146 |
| Tagged | General. | 100,000,000 | 288 |
| Talkbiznow | Business networking | 136,346 | |
| Taltopia | Online artistic community | 281,501 | |
| Taringa! | General (primarily Argentina) | 11,000,000 | 214 |
| TeachStreet | Education / Learning / Teaching – More than 400 subjects | 422,704 | |
| TermWiki | Learning / Languages / Translation – 1.2m terms in more than 1300 subjects | 22,997 | |
| The Sphere | A Private Online Social Luxury Network with Exclusive Personalized Services | 1,300 | 1,115,305 |
| TravBuddy.com | Travel | 1,588,000 | 21,523 |
| Travellerspoint | Travel | 310,000 | 15,275 |
| tribe.net | General | 8,081 | |
| Trombi.com | French subsidiary of Classmates.com | 4,400,000 | 16,227 |
| Tuenti | Spanish-based university and High School social network. | 12,000,000 | 5,293 |
| Tumblr | Microblogging platform and Social Networking Website. | 32 | |
| General. Micro-blogging, RSS, updates | 93,800,000 | 8 | |
| Tylted | Mobile social game network | 3,000,000 | 737,508 |
| Vampirefreaks.com | Gothic and industrial subculture | 1,931,049 | 21,052 |
| Viadeo | Global Social Networking and Campus Networking available in English, French, German, Spanish, Italian and Portuguese | 35,000,000 | 435 |
| Virb | Social network that focuses heavily on artists, including musicians and photographers | 33,371 | |
| Vkontakte | General, including music upload, listening and search. Popular in Russia and former Soviet republics. | 249,409,900 | 38 |
| Vox | Blogging | 56,558 | |
| Wattpad | For readers and authors to interact & e-book sharing | 7,036 | |
| WAYN | Travel and lifestyle | 10,000,000 | 1,367 |
| We Heart It | Image-based social network focused on inspiration, expression and creativity | 20,000,000 | 899 |
| WeeWorld | Teenagers – 9 to 17 | 30,000,000 | 18,317 |
| Wellwer | Community without borders, where sharing is everything. | 370,755 | |
| WeOurFamily | General with emphasis on privacy and security | 3,359,241 | |
| Wepolls.com | Social polling network | 1,204,376 | |
| weRead | Books | 4,000,000 | 305,720 |
| Wer-kennt-wen | General | 2,147 | |
| Wiser.org | Online community space for the social justice and environmental movement | 71,600 | 239,901 |
| Wooxie | Blogging and micro-blogging | 111,538 | |
| WriteAPrisoner.com | Site networking inmates, friends, family | 66,000 | 228,915 |
| Xanga | Blogs and “metro” areas | 27,000,000 | 3,943 |
| Business (primarily Europe (Germany, Austria, Switzerland)) | 11,100,000 | 270 | |
| Xt3 | Catholic social networking, created for World Youth Day 2008 | 712,292 | |
| Yammer | Social networking for office colleagues | 3,622 | |
| Yelp, Inc. | Local Business Review and Talk | 186 | |
| Zoo.gr | Greek Web Meeting point | 890,000 | 34,577 |
| Zooppa | Online Community for Creative Talent (host of brand sponsored advertising contests) | 60,000 | 36,373 |
