( utiliser le google translate pour Français )

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Name	Description/Focus	Date launched	Registered users	Registration	Global Alexa[1] Page ranking
43 Things	Goal setting and achievement	1st January 2005	3,000,000[2]	Open	13,332[3]
Academia.edu	Social networking site for academics/researchers	September 2008	211,000[4]	Open	6,053[5]
Advogato	Free and open source software developers	1999	13,575[6]	Open	144,599[7]
aNobii	Books	2006	Open	11,932[8]
AsianAvenue	A social network for the Asian American community	1997	Open	75,854[9]
aSmallWorld	European jet set and social elite world-wide	March 2004	550,000[10]	Invite-only	6,192[11]
Athlinks	Running, Swimming	2001	139,458[12]	Open	37,129[13]
Audimated.com	Independent music	2010	Open	747,857[14]
Badoo	General, Meet new people, Popular in Europe and Latin America	2006	133,000,000[15]	Open to people 18 and older	117[16]
Bebo	General	July 2005	117,000,000[17]	Open to people 13 and older	2,279[18]
BIGADDA	Indian Social Networking Site	August 2007	3,000,000[19]	Open to people 16 and older	12,903[20]
Biip.no	Norwegian community	June 1, 2005	430,000[21]	Requires Norwegian phone number	42,468[22]
BlackPlanet	African-Americans	September 1, 1999	20,000,000[23]	Open	5,863[24]
Blauk	Anyone who wants to tell something about a stranger or acquaintance.	2010	Open to people 13 and older.	463,796[25]
Blogster	Blogging community	November 24, 2005	85,579[26]	Open	10,144[27]
Bolt.com	General	1996	Open	111,069[28]
Busuu	Language learning community	May 16, 2008	4,000,000[29]	Open	4,330[30]
Buzznet	Music and pop-culture	2005	10,000,000[31]	Open	1,227[32]
CafeMom	Mothers	December 2006	1,250,000[33]	Open to moms and moms-to-be	1,492[34]
Cake Financial	Investing	September 17, 2007	Open	481,922[35]
Care2	Green living and social activism	1998	9,961,947[36]	Open	1,883[37]
CaringBridge	Not for profit providing free websites that connect family and friends during a serious health event, care and recovery.[38]	9,500,000[39]	Open to people 18 and older[40]	[41]
Cellufun	Mobile social game network, Number 8 US mobile website[42]	2007	3,000,000[43]	Open to people 14 and older	115,511[44]
Classmates.com	School, college, work and the military	1995	50,000,000[45]	Open to people 18 and older[46]	2,961[47]
Cloob	General. Popular in Iran	2004	Open	914[48]
CouchSurfing	Worldwide network for making connections between travelers and the local communities they visit.	2003	2,967,421[49]	Open	1,821[50]
CozyCot	East Asian and Southeast Asian women	2001	150,000[51]	Open	3,711[50]
Cross.tv	Faith Based social network for Christian believers from around the world	2008	450,000[52]	Open	31,716[53]
Crunchyroll	Anime and forums.	2006	Open	5,153[54]
Cyworld	General. Popular in South Korea.	1999	24,000,000[55]	Open	1,020[56]
DailyBooth	Photo-blogging site where users upload a photo every day	February 13, 2009	Open	5,014[57]
DailyStrength	Medical & emotional support community - Physical health, Mental health, Support groups	November 4, 2007	Open	22,054[58]
Decayenne	European and American social elite	2001	Invite-only	1,263,943[59]
delicious	Social bookmarking allowing users to locate and save websites that match their own interests	September 2003	8,822,921[60]	Open	272[61]
deviantART	Art community	August 7, 2000	9,040,962[62]	Open	126[63]
Diaspora*	Decentralized, privacy aware, general (open source)	November, 2010	200,000+[64][65]	Open	24,947[66][67]
Disaboom	People with disabilities (Amputee, cerebral palsy, MS, and other disabilities)	Open	275,698[68]
Dol2day	Politic community, Social network, Internet radio (German-speaking countries)	40,200[69]	Open	887,047[70]
DontStayIn	Clubbing (primarily UK)	Open	54,095[71]
Draugiem.lv	General (primarily LV, LT, HU)	2,600,466[26]	Invitation only	2,915[72]
douban	Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music.	2005	46,850,000[73]	Open	119[74]
DXY.cn	Chinese online community for physicians, health care professionals, pharmacies and facilities	2000[75]	2,000,000[76]	Open	14,005[77]
Elftown	Community and wiki around Fantasy and sci-fi.	185,000[78]	Open, approval needed	43,277[79]
Elixio	High-net-worth individuals, young business executives	July 2007	40,000 [80]	Invite-only	153,646[81]
Epernicus	For research scientists	Open	528,083[82]
Eons.com	For baby boomers and mature internet users age 40 and beyond.	Open to people age 40 years and older	34,240[83]
Experience Project	Life experiences	Open	3,452[84]
Exploroo	Travel Social Networking.	Open	209,868[85]
Facebook	General.	February 2004	800,000,000+[86]	Open to people 13 and older	2[87]
Faceparty	General. Popular UK.	200,000[88]	Invitation only to people 18 and older	28,760[89]
Faces.com	Adult Social Network, Mainly UK & USA	2011	700,000[90]	Open to people 18 and older worldwide	159,693[91]
Fetlife	People who are into BDSM	500,000[92]	Open to people "of [legal] age to see adult content"	5,513[93]
FilmAffinity	Movies and TV Series	2002	250,000[94]	Open	3,916[95]
FledgeWing	Entrepreneural community targeted towards worldwide university students	Open to university students	1,793,990[96]
Flixster	Movies	2007	63,000,000[97]	Open to people 13 and older	1,018[98]
Flickr	Photo sharing, commenting, photography related networking, worldwide	February 2004	32,000,000[99]	Open to people 13 and older (Yahoo! Login)	31[100]
Focus.com	Business to Business, worldwide	2005	850,000[101]	Open to people 13 and older	11,495[102]
43 Things	Goal setting and achievement	1st January 2005	3,000,000[103]	Open	13,332[104]
Fotki	Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration.	October 1998	1,632,565	Open	5,367[105]
Fotolog	Photoblogging. Popular in South America and Spain	20,000,000[106]	Open	1,194[107]
Foursquare	Location based mobile social network	10,000,000[108]	Open	625[109]
Friends Reunited	UK based. School, college, work, sport and streets	19,000,000[110]	Open to people 13 and older	10,231[111]
Friendster	General. Popular in Southeast Asia. No longer popular in the western world	2002	90,000,000[112]	Open to people 16 and older.	979[113]
Frühstückstreff	General	July 2001	14,800[citation needed]	Open	1,253,155[114]
Fubar	dating, an "online bar" for 18 and older	October 2007	1,200,000[115]	Open to people 18+	9,476[116]
Gaia Online	Anime and games. Popular in USA, Canada and Europe. Moderately popular around Asia.	23,523,663[117]	Open to people 13 and older	1,071[118]
GamerDNA	Computer and video games	September 21, 2006	310,000[119]	Open	22,887[120]
Gather.com	Article, picture, and video sharing, as well as group discussions	465,000[121]	Open	3,974[122]
Gays.com	Social network for LGBT community, Guide for LGBT bars, restaurants, clubs, shopping	May 16, 2008	100,000[123]	Open, Global	74,664[124]
Geni.com	Families, genealogy	January 16, 2007	15,000,000[125]	Open	5,815[126]
GetGlue	Social network for entertainment	October 28, 2008	2,000,000[127]	Open	4,124[128]
Gogoyoko	Fair play in Music - Social networking site for musicians and music lovers	Invite only while in beta	119,272[129]
Goodreads	Library cataloging, book lovers	December 2006	Open	2,543[130]
Goodwizz	Social network with matchmaking and personality games to find new contacts. Global, based in France.	October 2010	110,000[131][132]	Open	214,214[133]
Google+	General	June 28, 2011	100,000,000[134]	General, Open	NA (Alexa only records data for Second-level domains)
Google Buzz	General	February 9, 2010[135]	Open	NA (Alexa only records data for second-level domains)
GovLoop	for people in and around government	91,852[136]
Grono.net	Poland	2,000,000[citation needed]	Open	2,958[137]
Habbo	General for teens. Over 31 communities worldwide. Chat Room and user profiles.	200,000,000[138][139][140]	Open to people 13 and older	6,545[141]
hi5	General. Popular in India, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the USA.	2003	80,000,000[142]	Open to people 13 and older.	443[143]
Hospitality Club	Hospitality	328,629[144]	Open	38,258[145]
Hotlist	Geo-Social Aggregator rooted in the concept of knowing where your friends are, were, and will be.	80,000[146]	Open	28,241[147]
HR.com	Social networking site for Human Resources professionals	1999	194,000[148]	Open	60,048[149]
Hub Culture	Global influencers focused on worth creation	November 2002	20,000[150]	Invite-only	515,308[151]
Hyves	General, mostly popular in the Netherlands.	September 2004	10,097,000[152]	Open	658[153]
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[154]	Open	695[155]
Identi.ca	Twitter-like service popular with hackers and software freedom advocates.	395,695[citation needed]	Open	3,822[156]
Indaba Music	Online collaboration for musicians, remix contests, and networking.	350,000[157]	Open, Global	55,062[158]
IRC-Galleria	Finland	505,000[159]	Open to Finnish speaking people 12 and older	3,302[160]
italki.com	Language learning social network. 100+ languages.	500,000[161]	Open, Global	29,939[162]
Itsmy	Mobile community worldwide, blogging, friends, personal TV-shows	2,500,000[163]	206,437[164]
iWiW	Hungary	April 14, 2002	4,000,000[165]	Invite-only	532[166]
Jaiku	General. Microblogging. Owned by Google	February 2006	Open to people 13 and older	15,661[167]
Kaixin001	General. In Simplified Chinese; caters for mainland China users	Open to the General Public	183[168]
Kiwibox	General.	1999	2,400,000[169]	Open to people 13 and older	104,563[170]
Lafango	Talent-Focused media sharing site	Open, Global	151,301[171]
LaiBhaari	Marathi social networking	2010	250,000	Open	19,503[172]
Last.fm	Music	2002	30,000,000[173]	Open	552[174]
LibraryThing	Book lovers	August 29, 2005	1,300,000[175]	Open to people 13 and older	8,243[176]
Lifeknot	Shared interests, hobbies	Open to people 18 and older	602,117[177]
LinkedIn	Business and professional networking	May 2003	120,000,000[178]	Open to people 18 and older	13[179]
LinkExpats	Social networking website for expatriates. 100+ countries.	Open, Global	1,668,484[180]
Listography	Lists. Autobiography	Open	197,009[181]
LiveJournal	Blogging. Popular in Russia and among the Russian-speaking diaspora abroad.	April 15, 1999	17,564,977[182]	Open (OpenID)	76[183]
Livemocha	Online language learning	5,000,000[184]	Open	4,079[185]
LunarStorm	Sweden	1,200,000[186]	Open	65,874[187]
Makeoutclub	General	August 9, 1999	Open	723,381[188]
MEETin	General	Open	173,717[189]
Meetup.com	General. Used to plan offline meetings for people interested in various activities	Open to people 18 and older	739[190]
Meettheboss	Business and Finance community, worldwide.	Open	107,180[191]
Mixi	Japan	October 25, 2000	24,323,160[192]	Invite-only	140[193]
mobikade	mobile community, UK only	Open to people 18 and older	1,851,728[194]
MocoSpace	mobile community, worldwide	3,000,000[195]	Open to people 14 and older	3,685[196]
MOG	Music	Open to people 14 and older	4,221[197]
MouthShut.com	Social Network, social media, consumer reviews	Open	2,545[198]
Mubi (website)	Auteur cinema	200,000	Open	25,648[199]
Multiply	"Real world" relationships. Popular in primarily in Asia.	10,000,000[200]	Open to people 13 and older.	382[201]
Muxlim	Muslim portal site	2006	50,000[202]	Open to people 13 and older	59,099[203]
MyAnimeList	Anime themed social community	160,000[204]	Open to people 13 and older	6,096[205]
MyHeritage	family-oriented social network service	30,000,000 [206]	Open	2,953[207]
MyLife	Locating friends and family, keeping in touch (formerly Reunion.com)	51,000,000[208]	Open	1,481[209]
My Opera	Blogging, mobile blogging, photo sharing, connecting with friends, Opera Link and Opera Unite. Global	7,300,000[210]	Open	NA (Alexa only records data for second-level domains)
Myspace	General	August 2003	100,000,000+[211][212]	Open to ages 13 and older.	131[213]
myYearbook	General, Charity	20,000,000[214]	Open to age 13 and up & Grades 9 and up	851[215]
Nasza-klasa.pl	School, college and friends. Popular in Poland	11,000,000[216]	Open	40,961[217]
Netlog	General. Popular in Europe, Turkey, the Arab World and Canada's Québec province. Formerly known as Facebox and Redbox.[218]	70,000,000[219]	Open to people 13 and older	296[220]
Nettby	Norwegian Community	September 14, 2006	Open	2,719[221]
Nexopia	Canada	1,400,000[222]	Open to people 13 and older [223]	24,071[224]
NGO Post	Non-Profit news sharing and networking, mainly in India	15,000[225]	Open	70,134[226]
Ning	Users create their own social websites and social networks	Open to people 13 and older	273[227]
Odnoklassniki	Connect with old classmates. Popular in Russia and former Soviet republics	45,000,000[228]	Open	104[229]
OneClimate	Not for Profit Social networking and Climate Change	Open to People of all ages and locations	307,773[230]
OneWorldTV	Not for Profit Video sharing and social networking aimed at people interested in social issues, development, environment, etc.	Open	27,434,227[231]
Open Diary	First online blogging community, founded in 1998	1998	5,000,000[232]	Open to people 13 and older	39,290[233]
Orkut	General. Owned by Google Inc. Popular in India and Brazil.[234]	January 22, 2004	100,000,000[235]	Open to people 18 and older, (Google login)	106[236]
OUTeverywhere	Gay/LGBTQ Community	Open	329,887[237]
Passportstamp	Travel	Open	366,598[238]
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.	2006	109,587[239]	Open to people 13 years and up	57,962[240]
Partyflock	Dutch virtual community for people interested in house music and other electronic dance music	November 10, 2001	321,125	Open to people 18 years and up	7,226[241]
Pingsta	Collaborative platform for the world's Internetwork Experts	Invite-only, only Internet Experts	1,668,955[242]
Plaxo	Aggregator	15,000,000[243]	Open	1,533[244]
Playahead	Swedish, Danish teenagers	Closed	63,081[245]
PureVolume	Connecting indie music bands and listeners, through music sharing and social networking	2003	Open	20,822[246]
Playfire	Computer and video games	Open to people 13 and older	62,555[247]
Playlist.com	General, Music	Open to people over 13	4,340[248]
Plurk	Micro-blogging, RSS, updates. Very popular in Taiwan	Open	1,072[249]
Present.ly	Enterprise social networking and micro-blogging	Open	4,893,711[250]
Qapacity	A a business-oriented social networking site and a business directory	Open to people 16 and older	96,847[251]
Quechup	General, friendship, dating	2007	Open to those over 16	150,757[252]
Qzone	General. In Simplified Chinese; caters for mainland China users	480,000,000[253][254]	Open to the general public	NA (Alexa only records data for second-level domains)
Raptr	Video games	Open	25,664[255]
Ravelry	Knitting and crochet	1,814,460[256]	Open	3,387[257]
Renren	Significant site in China. Was known as 校内 (Xiaonei) until August 2009.	160,000,000[258]	Open	83[259]
ResearchGate	Social network for scientific researchers	1,000,000[260]	Open	23,095[261]
ReverbNation.com	Social network for musician and bands	500,000[262]	Open to people 16 and older	4,422[263]
Ryze	Business	500,000[264]	Open	19,839[265]
ScienceStage	Science-oriented multimedia platform and network for scientists	Open	26,804[266]
Scispace.net	Collaborative network site for scientists	By invitation, but can request an invitation	1,231,795[267]
ShareTheMusic	Music Community. Sharing and listening to music for free and legally	Open	471,712[268]
Shelfari	Books	October 11, 2006	Open	19,681[269]
Skyrock	Social Network in French-speaking world	22,000,000[270]	Open	437[271]
Social_Life_(website)	Brazilian jet set and social elite world-wide	2008	550,000[272]	Invite-only	154,533[273]
SocialVibe	Social Network for Charity	435,000[citation needed]	Open	41,927[274]
Sonico.com	General. Popular in Latin America and Spanish and Portuguese speaking regions.	17,000,000[275][276]	Open to people 13 and older	507[277]
SoundCloud	Repository of original music pieces and networking.	1,000,000[278]	Open	374[279]
Stickam	Live video streaming and chat.	2,000,000[280]	Open	2,742[281]
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[282]	Open	1,318[283]
Students Circle Network	A Social Network connecting students, teachers and institutions to course resources, study groups and learning spaces.	December 2010	Open	605,000[284]
StumbleUpon	Stumble through websites that match your selected interests	10,600,000[285]	Open	108[286]
Tagged	General.	100,000,000[287]	Open	281[288]
TalentTrove	Online Talent Network	Open	21,177[289]
Talkbiznow	Business networking	Open	283,770[290]
Taltopia	Online artistic community	Open	52,759[291]
Taringa!	General	11,000,000[292]	Open to people 13 and older	137[293]
TeachStreet	Education / Learning / Teaching - More than 400 subjects	Open	61,492[294]
TermWiki	Learning / Languages / Translation - 1.2m terms in more than 1300 subjects	May 2010	Open	16,182[295]
The Sphere (social network)	A Private Online Social Luxury Network with Exclusive Personalized Services	December 2008	1,300[296]	Invite-only	4,105,385[297]
TravBuddy.com	Travel	2005	1,588,000[298]	Open to people 18 and older	11,789[299]
Travellerspoint	Travel	2002	310,000[300]	Open	11,486[301]
tribe.net	General	Open	5,706[302]
Trombi.com	French subsidiary of Classmates.com	4,400,000[303]	7,283[304]
Tuenti	Spanish-based university and High School social network. Very Popular in Spain	12,000,000[305]	Invite-only	730[306]
Tumblr	General. Micro-blogging, RSS	2007	Open	46[307]
Twitter	General. Micro-blogging, RSS, updates	July 15, 2006	300,000,000[308]	Open	9[309]
Vkontakte	Social Network for Russian-speaking world including former Soviet republics.	September 2006	110,578,500[310]	Open	44[311]
Vampirefreaks.com	Gothic and industrial subculture	1999	1,931,049[312]	Open to users 13 and over	7,577[313]
Viadeo	Global Social Networking and Campus Networking available in English, French, German, Spanish, Italian and Portuguese	35,000,000[314]	Open	710[315]
Virb	Social network that focuses heavily on artists, including musicians and photographers	2007	Open	22,474[316]
Vox	Blogging	Open	1,319[317]
Wakoopa	For computer fans that want to discover new software and games	100,000[citation needed]	Open	9,420[318]
Wattpad	For readers and authors to interact & e-book sharing	Open	11,008[319]
Wasabi	General. UK-based.	Open	95,188[320]
WAYN	Travel and lifestyle	May 2003	10,000,000[321]	Open to people 18 and older	2,974[322]
WebBiographies	Genealogy and biography	Open	734,214[323]
WeeWorld	Teenagers - 10 to 17	30,000,000[324]	Open to ages 13 and older.	8,729[325]
Wellwer	Community without borders, where sharing is everything.	September 2011	Open to people 13 years and older	716,594[326]
WeOurFamily	General with emphasis on privacy and security	Open, subscription-based	685,337[327]
Wer-kennt-wen	General	General	441[328]
weRead	Books	June 2007	4,000,000[citation needed]	Open	80,233[329]
Windows Live Spaces	Blogging (formerly MSN Spaces)	120,000,000[330]	Open	NA (Alexa only records data for second-level domains)
WiserEarth	Online community space for the social justice and environmental movement[331]	45,000[332]	Open to people 16 and older	77,143[333]
Wooxie	Blogging and micro-blogging	Open	169,489[334]
WriteAPrisoner.com	Site networking inmates, friends, family	September 2000	66,000[335]	Open to people 18 years and older	252,188[336]
Xanga	Blogs and "metro" areas	Unknown	27,000,000[337]	Open	768[338]
XING	Business (primarily Europe (Germany, Austria, Switzerland))	11,100,000[339]	Open	260[340]
Xt3	Catholic social networking, created after World Youth Day 2008	Open	136,804[341]
Yammer	Social networking for office colleagues	Must have company email	3,769[342]
Yelp, Inc.	Local Business Review and Talk	Open	182[343]
Zoo.gr	Greek Web Meeting point	2004	890,000[344]	Open	8,057[345]
Zooppa	Online Community for Creative Talent (host of brand sponsored advertising contests)	60,000[346]	Open to people 14 and older[347]	88,555[348]