1. Backflip : Backflip is a free service currently being run by volunteers. Backflip was started in 1999 by Netscape veterans Tim Hickman and Chris Misner. As a research tool, Backflip is clearly of value to the education community, and that community (or at least certain segments) has certainly embraced Backflip. A Google search of sites that contain the term “Backflip.com” results in numerous education-related links, including Teacher Tools.
  2. barksbookmarks : BARKS=BookmARKS is a website that combines social bookmarking, blogging, RSS, and non-hierarchical editorial control.
  3. BibSonomy :BibSonomy is run by the Knowledge Data Engineering Group of the University of Kassel, Germany. Its specifically designed for researchers, in sharing bookmarks and bibliographies
  4. Blinklist :A social bookmarking site launched by Mindvalley. According to their site, they launch several web businesses a year and are focused in 3 areas. - Technology, media and Marketing. BlinkList does have a user friendly interface indicating that its being run well and efficiently. They also quote “fully profitable” on their site. Furthermore, you can label and comment about any web page on the Internet.
  5. Blipoo :Meet Blipoo, a social bookmarking site for “cool” people sharing “cool” stories. It claims to help bloggers drive more traffic to their blog because they allow self promotion..
  6. BlogBookMark : Designed specifically for Blog hunters, BlogBookmark.com claims to have the hottest news, gossip, and blog chatter from around the web. I highly sugggest that mainstream bloggers bookmark their entires here.
  7. BlueDot : This basic social networking service allows users to save and share bookmarks.
  8. blurpalicious : Get Blurped! Not too different from other social bookmarks, but I love the tagline.
  9. Bmaccess : Social bookmarking with thumbs :)
  10. Bookkit : BookKit.com is an absolutely free web service designed to facilitate bookmark (favorites) management needs.
  11. BookMarkAll : Bookmarkall is an online bookmark community where users can create, organize and share their favorite web links online and access them anywhere.
  12. Bookmark-manager : Organizer for bookmarks, calendar, diary and knowledge.
  13. bookmarktracker : Free online storage, management, synchronizing and RSS sharing of your bookmarks.
  14. Bookmax : You can store your bookmarks and links to your favorite sites online and access them from wherever you are : basic Social Bookmarking.
  15. Buddymarks : The online personal, group and social bookmarks manager.
  16. Bukmark : Bukmark is a social bookmarking website.
  17. Chipmark :Another basic social bookmarking site.
  18. Citeulike : A free service to help academics to share, store, and organise the academic papers they are reading.
  19. Claimid : Manage your online identity. Although this is not a normal social bookmarking site, users can bookmark sites which reference their identity and build backlinks in this fashion.
  20. Clipclip : Clipclip allows you to save images and text, with a “bookmarklet”.
  21. Cloudytags : A unique word analyzer connects to your page, gets all the words and suggest you the real tags your site is showing to the world.
  22. Complore : Derived from com-(with,together) and explore-(search, research). As the name suggests, complore is a vision to connect people from diverse backgrounds
  23. Connectedy : Lets you establish a personal link directory online. As you surf the web, you collect links, categorize them in a way that makes sense to you.
  24. Connotea : Social bookmarking (for researchers).
  25. Contentpop : It has the latest Web 2.0 features such as social bookmarking, blogging & RSS. It also uses the word POP in the title which means it must be good.
  26. coRank : coRank is a site where you can share whatever you find interesting on the web with people who value your opinion
  27. Crowdfound : CrowdFound is essentially a social bookmarking website, but with a different vision in mind
  28. de.lirio.us : Store, share and tag your favourite links. Open source clone ofdel.icio.us with private bookmarking, tagging, blogging, and notes
  29. del.icio.us : THE social bookmarking site : It allows you to easily add sites you like to your personal collection of links and to categorize those sites with keywords. Not to mention that if enough people save your site in a bookmark, it will make their popular page and send a lot of traffic. Delicious is owned by Yahoo and is a MUST for your social media and bookmarking strategy.
  30. Diigo : Social bookmarking on steroids.
  31. Digg : The social news site that changed the Internet, Digg is a high power authority and a listing in Digg for a site, even if it only has a couple of votes, will rank highly on Google and other search engines for certain terms. If your site is shared and voted upon on Digg, and makes the Digg homepage, you’ll get a lot of traffic and attention from other bloggers who read Digg.
  32. Dropjack : DropJack.com is a social content website and owned by the ExactSeek company.
  33. Easybm : Allows users to bookmark their frequently visited sites on their private page, allowing 1-click access to their favorite web sites.
  34. Enroll : Social bookmarking system based in India.
  35. ez4u : Social Bookmarking - Ez4u to Bookmark : “Ez4u to Organize Ez4u to Share with Others Ez4u to Remember”
  36. Favoor : Favoor is your personalized new start page. Collect your favorite internet addresses.
  37. Folkd : Folkd is a social web-service about pages, news, audios, videos and blogs.
  38. Freelink : Freelink.org provides free pages of links that you can access anywhere at anytime.
  39. Freezilla : FreeZilla claims to be the first Web 2.0 freebies and promotions social networking site.
  40. Fungow : Fungow was designed to help better organize and keep track of your bookmarks.
  41. Furl : Like Delicious, LookSmart’s Furl.net is one of the first social bookmarking sites and considered an authority by the major search engines. Listing your sites in Furl will lead to traffic from organic rankings and its popular page drives traffic.
  42. Gather : Gather is a place to contribute articles and content, blog, tag and connect with people who share your passions. (Plus you can link out from the articles in this authority site).
  43. Getboo : GetBoo.com is yet another free online bookmarking service which allows you to store, edit and retrieve your bookmarks from anywhere online.
  44. Google : Allows users to save and create bookmarks in their Google toolbar that can be accessed anywhere online. Google is getting more social by the day, so take advantage of their Google Bookamrks and citations, because one day they probably will have some kind of influence on external meta data considered by the Google ranking algortihm.
  45. Hanzoweb : Hanzoweb - Bookmark, tag & share knowledge online
  46. Hyperlinkomatic : Hyperlinkomatic - bookmark list manager.
  47. i89.us : i89.us offers a free service which allows you to save your favorite website/links at one location that can be accessed from anywhere.
  48. Icio : Danish Bookmarking engine.
  49. Ikeepbookmarks : Popup feature allows you to add links while surfing the web
  50. Iloggo : Simple web based bookmarking tool that you can use for attractively displaying your favorite websites on one page.
  51. Jigg : Jigg.in is a socializing community with the latest stories / news submitted by users and has a familiar name :)
  52. Kaboodle : Kaboodle is a 2.0 shopping community where people recommend and discover new things.
  53. Kinja : Kinja is a blog guide, collecting news and commentary from some of the best sites on the web.
  54. Lifelogger : “LifeLogger is a great way to keep things that matter to you alive and sparkling.” And worth considering in a bookmarking campaign.
  55. Lilsto : Lilisto lets you store, manage and find your favorite links (or bookmarks) and removes the need to maintain them through your browser.
  56. Linkagogo : Favorites and Social Bookmarking Application, its unique dynamic toolbars automatically adapt themselves.
  57. Linkarena : German Social Bookmarking site.
  58. Linksnarf : Social link sharing with groups of friends.
  59. Listerlister :ListerLister is a social list building community where you can create, add to, and vote for both lists and the items added to them.
  60. Ma.gnolia.com : Like Furl and Delicious, anoter major bookmarking site which lets users organize bookmarks, search other people’s favorites and make friends and contacts.
  61. Markaboo : MarkaBoo is tool for saving websites, files, and notes from your browser, email or mobile phone.
  62. Marktd : Marktd is a reference & voting system that highlights marketing articles considered valuable by the marketing community.
  63. Memfrag : memFrag stores your favorites personal notes, making them globally accessible from any computer.
  64. Memotoo :Lets users centralize and share your personal data.
  65. Mister Wong : Mister Wong is a social bookmarking site that originated in Germany, and has since become a popular and widespread tool.
  66. Mixx : An up and coming bookmarking and social news sharing network which should rival Digg, Reddit and others, Mixx blends popular photos, videos and stories.
  67. Mobleo : Allows you to easily add, organize, and share your mobile phone bookmarks with your friends using your desktop computer.
  68. Multiply :Florida-based social network Multiply, which reports nearly 3 million users and $6 million in funding,opened its social bookmarking site recently and has done well. Definite authority :)
  69. Murl : My URLs is a free online bookmarks manager, think of it as a bookmarks community.
  70. MyBookmarks : MyBookmarks - access your bookmarks anytime, anywhere. Free productivity tool for business, student or personal use. Another popular bookmarking site.
  71. Myhq : Store your bookmarks in one central location. Fast, text-based, banner free!
  72. MyLinkVault : A free online bookmark manager. Other bookmark managers can be so clumsy to use - trying to rearrange your bookmarks can be slow and frustrating.
  73. mySiteVote : mySiteVote is a community where you can vote your favorite site/s and view how popular a site is.
  74. MyWebDesktop : A collaboration and communication tool, designed to be as generic and easy to use as a telephone and email.
  75. Newsvine : The mission of Newsvine is to bring together big and little media in a way which respects established journalism
  76. Newsweight :NewsWeight is a democratic news, information, and entertainment resource.
  77. Oyax : Oyax is a social bookmark manager which allows users to easily add sites you like to personal collection of links, categorize those sites with keywords.
  78. Philoi : Person-to-person link sharing community. Save bookmarks and share links with your friends.
  79. PlugIM : PlugIM is a user driven internet marketing community. Submit content, share articles, comment on projects and promote your favorites to the front page
  80. Propeller : Formaly known as Netscape, AOL’s Propeller has become a great social bookmarking news community tool which is considered an ultimate authority by Yahoo Search and passes link juice in its news story profiles. Propeller is also going to redesign very soon, which should be quite exciting.
  81. QuickieClick : QuickieClick is a second generation social bookmarking website with a visual twist.
  82. Rambhai : An Indian social bookmarking community
  83. RawSugar : A social search engine powered by user contributions. Its an online community, with over 130,000 URLs already tagged by their members.
  84. Reddit : Timely and shocking news oriented, Reddit stories are instantly voted upon and if liked by the community as a whole, can drive incredible traffic and users.
  85. Searchles : Owned by the DumbFind search engine, in my opinion Searchles is a much overlooked bookmarking tool and loved by Google, Yahoo and the other major search engines with its passing of link juice and high rankings for terms within search results themselves. Do not overlook Searchles.
  86. Segnalo : Italian Social bookmarking site.
  87. Simpy [late addition]: Social bookmarking & search, Simpy lets users “save, tag, search and share bookmarks, notes, groups and more.”
  88. Sitebar : A solution for people who use multiple browsers or computers and want to have their bookmarks available from anywhere without need to synchronize them
  89. Sitejot :Free online bookmark manager. Like every other social bookmarking site, it allows users to manage all of their bookmarks online in one convenient place.
  90. Sk*rt : sk*rt is a social media ranking platform of “pure goodness”, targeted towards women. Given the right story, Sk*rt can send A LOT of targeted traffic.
  91. Slashdot : The godfather of social news, SlashDot bookmarks are still quite powerful .. keep in mind the site has a heavy slant towards Linux and Open Source issues.
  92. SocialDanger : SocialDanger is a Web 2.0 open source content management system.
  93. Socialogs : A Digg-like Social Bookmarking Service.
  94. Sphinn : Very popular search marketing oriented social news and discussion site run via the Pligg system.
  95. Spotback : Spotback is a personalized rating system that recommends relevant content based on personal rating history using collaborative filtering
  96. Spurl : Another cherished bookmarking and tagging site, Spurl lets users keep online bookmarks & tags while offering full text searching, recommendations & storing of entire documents.
  97. Squidoo :Kind of spammed out, Squidoo is a 2.0 property which lets people and businesses set up a ‘lens’ which lists links, tags and relevant RSS feeds to different subjects.
  98. Startaid : I’ve noticed that StartAid bookmark pages rank highly in Google and other search engines. This basic bookmarking service allows users to describe, tag and categorize sites.
  99. StumbleUpon : Owned by eBay, StumbleUpon is an amazing blend of social bookmarking, voting, networking, web surfing, search and blogging. Best of all, StumbleUpon can send major traffic with its userbase of around 3 million users.
  100. Stylehive : The Stylehive is a collection of all the best products, brands, designers and stores discovered and tagged by the Hive community
  101. Syncone : SyncOne is an Internet aggregator of bookmarking and browsing.
  102. Tagfacts : Basic bookmarking and tagging, a social knowledge base.
  103. Taggly : Store, share and tag your favorite links.
  104. Tagne : TagNe.ws is user-submitted, community voted links and resources related to SEO, Blogging, RSS, Tagging, Internet Marketing and more.
  105. Tagtooga : Says that this bookmarking engine can be used to discover great sites difficult to find in Google/Yahoo by browsing categories.
  106. Tagza : A very young Social Bookmarking site mostly being used by Indian and Pakistani web masters.
  107. Technorati : Always changing and reinventing themselves, this recognized authority offers links to blogposts, tagging and a social bookmarking WTF section.
  108. Tedigo : Personal and social bookmarking in Spanish and English made simple.
  109. Thinkpocket : Lets users pocket websites you find valuable. It is a web service that aims to help store, organize and share your favorite sites
  110. Thoof : Thoof is a user generated news and information service that claims to learn about what users are interested in and delivers news that they care about.
  111. Totalpad : TotalPad is a new online news and article community where people are free to voice their opinions
  112. Urlex : With URLex system users are able to leave a comment regarding any internet link on any site. Possibly good for linking :)
  113. Uvouch : Another basic social bookmarking site, users can save their findings with one click, at one place and access it from anywhere.
  114. Vmark : An online bookmark and online favorites manager.
  115. Voteboat : VoteBoat is a user-controlled rating and voting site.
  116. Votelists : VoteLists lets users create a list of rankable items. Other can add items, comment on them, rate them and more!
  117. Vuju : Vuju allows user to submit/publish content which can be tagged and promoted.
  118. WeTogether : Social bookmarking site where people will have great opportunities to promote their own sites.
  119. Whitelinks : Securely store and quickly access favorite websites whenever connected to the Internet,:
  120. Wink : A social search engine where users can share results and answer questions. Users build profiles which can link out to bookmark pages or other web sites (hint hint).:
  121. Wirefan : Social bookmarking, news articles submission site.:
  122. Xilinus : Organize and manage bookmarks online.:
  123. Xlmark : xlmark is an easy social bookmarking site:
  124. Yahoo! Bookmarks: The MOST POPULAR social search and bookmarking service on the web. It’s similar to Delicious and something they launched before acquiring Delicious. Yahoo Bookmarks lets users store bookmarks using their Yahoo Toolbar and access them from any computer.
  125. Yattle: Bookmark Management and Mini-Blogging Service.
  126. Zlitt: Zlitt is a social bookmarking system which gives users the opportunity to share and tag favorite news, images and videos.
  127. Zurpy: Saves bookmarks, text clippings, images, files, and news feeds in one place.

Do you have any suggestions of other social bookmarking sites? Please feel free to add them in the comments below.


Social_Bookmarking
60094
6
BlogMarks.net

Social Bookmarking with thumbnails. Atom enabled.



Social_Bookmarking
438516
3
Blauer Bote Bookmarks

Bookmarak Manager in German and English



Social_Bookmarking
9781
7
LQ Bookmarks

Social Bookmarking, tagging and annotating all things Linux and Open Source.



Social_Bookmarking
295993
6
de.lirio.us

Social Bookmarking, Tagging, Blogging & Notes. Mmmmmm, Notes.



Social_Bookmarking
2180
8
del.icio.us

Currently the most used software application.



Social_Bookmarking
0
7
digg

Digg is a technology news website that combines social bookmarking, blogging, RSS, and non-hierarchical editorial control. With digg, users submit stories for review, but rather than allow an editor to decide which stories go on the homepage, the users do.



Social_Bookmarking
2378882
5
feedmarker

A free, Web based RSS/ATOM aggregator and bookmarks manager.




672284
1
FriendSite

Get free storage and share your photos & videos, get your own url and customize your page, create free evites and invitations, add friends, message people, create discussion forums and groups, blog, share and store your bookmarks & much more...



Social_Bookmarking
445264
5
frassle

Frassle helps you read and publish weblogs, track bookmarks, and find relevant content organized your way.




1928721
0
FuzzFizz

FuzzFizz is a brand new social bookmarking site, where users vote for the most interesting and important news stories.



Jumptags
125861
5
Jumptags

Jumptags.com is a revolutionary Web 2.0 social bookmarking web service for collecting, storing, sharing and distributing web bookmarks, notes, RSS feeds, contacts, and much more. Based on AJAX and other next generation web development techniques, Jumptags.com offers the easiest, fastest, most intuitive and productive way of maintaining and collaborating bookmarks and other internet resources online.



Social_Bookmarking
833758
5
linkroll

Linkroll is a free link blogging service. At a personal level you can bookmark, categorize and comment on all the great web pages/links you find. All your bookmarks are then sortable and searchable by category and date. All bookmarks are also accessible, by category and/or user, in the form of RSS feed (for your news aggregator), or JavaScript (for syndication on your own web site)



Social_Bookmarking
60011
4
loom

Collaborative bookmarking application written in PHP.



Social_Bookmarking
181086
6
MyProgs

Social bookmarking for programs you use.



Social_Bookmarking
1
7
Yahoo Search myweb2 beta

A social search engine integrating social bookmarking with search.



Social_Bookmarking
0
0
NEWNOOZE

Social Bookmarking on just about every subject. A Digg.com clone site. Beta Stage.



Social_Bookmarking
1328526
4
openBM

It's just linking cool sites together. openBM is a little tool for everybody. openBM just keep's your bookmarks and provides them for other people on the web.



Social_Bookmarking
122873
6
Reader²

Share the list of books you read or recommend, find new books by tags/authors. Multilanguage.



Social_Bookmarking
0
7
reddit

Social bookmarking where your votes affect your karma points.



Social_Bookmarking
0
6
scuttle.org

amongst others are based on the scuttle software.



Social_Bookmarking
0
5
Scuttle

Another open source clone of del.icio.us.



Social_Bookmarking
0
5
unalog

Open source bookmarking software written in the Python programming.



Social_Bookmarking
2308711
3
aworldofhelp

Users submit and rate links in numerous categories. The highest rated make the front page.



Social_Bookmarking
1150083
5
beanrocket

Beanrocket.com is a community and a news reader.



Social_Bookmarking
63378
6
BlinkList

Social bookmarking with slick interface and new ways for organizing tags.



Social_Bookmarking
98113
7
CiteULike

Social bookmarking for academic papers.



Social_Bookmarking
162993
6
commontimes

Provides community-based media distribution services and solutions along with BitTorrent hosting and consulting for individuals and organizations of all sizes.



Social_Bookmarking
699250
5
Connectedy

This service allows the establishment of pseudonymous online link libraries. Users may impose arbitrary categorical hierarchies on their links and choose which categories and links to make public and which ones to keep private. The Connectedy site has par SEO properties.



Social_Bookmarking
0
7
Connotea

Social bookmarking for scientists.



Social_Bookmarking
0
0
dinnerbuzz

Dinnerbuzz is a social guide to restaurants, bars, and coffee shops. It's designed to make it easier for you to find a place for dinner or drinks anywhere in the world.



Social_Bookmarking
0
4
Wiklink

Tools to synchronize bookmarks with your browser.



Social_Bookmarking
0
5
FeedMeLinks

Social Bookmarking since 2002.



Social_Bookmarking
0
3
FlipSkipper

social bookmarking manager that allows users to pull concurrent searches from Yahoo!, Google News, and del.icio.us when surfing.



Social_Bookmarking
0
8
Furl

Similar to del.icio.us: stores copies of the pages saved, automates finding users with similar interests, archives can be exported in MPLA or APA citation format.



Social_Bookmarking
0
4
GiveALink

Donate your bookmarks for academic research.



Social_Bookmarking
0
4
IndiaGram

Allows social bookmarking. Aim is to develop a community that shares information about websites on diverse topics.



Social_Bookmarking
0
6
jots

Jots is a collaborative bookmarking system that allows you to Store, Share and Discover relevant links. Store your own links and choose whether to share them with the world, with a select group of people or just for yourself to use. Discover new links based on specific users or topics of interest.



Social_Bookmarking
0
4
leze.de and

German Internet Bookmarking Service



Social_Bookmarking
0
0
LibraryThing

Deli.cio.us for books. Cataloging based on some 30+ libraries using the Z39.50 protocol.



Social_Bookmarking
0
4
linkblog

Portuguese



Social_Bookmarking
0
6
linkfilter

linkfilter.net is just what the name implies, a link filter. All links are posted and moderated by users. Links can be ranked on several levels: clicks, votes, age, or a combination of all three called points.



Social_Bookmarking
0
5
Lookmarks (beta)

Search and share your bookmarks



Social_Bookmarking
0
5
memestreams

"Don't hate the media, become the media!" - Biafra



Social_Bookmarking
0
6
Netvouz

Social bookmarking using either categories or tags. Share your bookmarks online or keep them private. RSS feeds for all bookmarks. Add2Netvouz button for easily bookmarking new sites, import/export, automatic link validation and lots of other features.



Social_Bookmarking
0
0
Network Menus

Social Bookmarking (or /wiki/Collaborative_Bookmarking title=Collaborative Bookmarking Collaborative Bookmarking) within a web browser toolbar.



Social_Bookmarking
0
4
O Y A X

A fast and quick social categorized bookmarking service with groups.



Social_Bookmarking
0
0
RawSugar

Socially enhanced web search based on hierarchal tagging of bookmarks and favorites. Include s multi-word categories, mechanism to define and rename categories, and hierarchy.



Social_Bookmarking
0
5
Shadows

Social bookmarking with tags, comments and ratings. Shadows' toolbar puts users one click away from a discussion forum for any page on the web.



Social_Bookmarking
0
6
Simpy

Social bookmarking with tagging and full-text searching.



Social_Bookmarking
0
0
sitetagger

SiteTagger.com is a bookmark/favorite organizer. You can bookmark websites you find on the internet via a simple button/favlet/bookmarklet that you can add to your browser link bar. This button makes it as simple as a click to bookmark a website page that you are visiting. The true power comes from the tags.



Social_Bookmarking
0
6
Spurl

Similar to del.icio.us: stores copies of the pages saved.



Social_Bookmarking
0
7
StumbleUpon

Bookmarking, social networking, friends-network, random browsing within interest-groups.



Social_Bookmarking
0
5
Sync2It's BookmarkSync

Effortless social bookmarking, millions of hand-picked sites, real-time RSS feeds, public & private collections. Features automatic clustering technology.



Social_Bookmarking
0
4
taghop

Taghop is a collaborative thoughtblog. A thoughtblog is a combination of some of the existing ideas behind blogs, with some ideas of its own. It is a web site, search engine, wiki, blogging system, social network and community site all rolled into one - or at least the best parts of those! They have been inspired by the great work from sites such as Google, Flickr, del.icio.us, 43things, etc




979342
0
Tagza.com

A very young Social Book marking web site mostly being used by Indian and Pakistani web masters.



Social_Bookmarking
0
3
Textnotes.de

Social notes manager. Easy integration of references to books, news and articles.



Social_Bookmarking
0
5
TheThingsIWant

Universal wishlist service with Social Bookmarking and RSS feeds.



Social_Bookmarking
0
3
URLex

Personal/Friends/Community bookmarking and rss feeds.



Social_Bookmarking
0
5
Wazima

Coupons clipped by robots. Wazima scours the web and shows you the deals you are most interested in.



Social_Bookmarking
0
5
Web Feeds

Web Feeds is a social bookmark site with a difference, users moderate and decide which items make it to the home page.



Social_Bookmarking
0
6
Wists

Visual bookmarks, wishlists, photoblogs.



Social_Bookmarking
0
6
wURLdBook

Share webreferences and rss feeds with others and more.



Social_Bookmarking
0
0
Yoono

Social Bookmarking based on browser bookmarks (no tags needed), includes a search engine, an RSS Reader, web monitoring and sharing functions. Windows application and firefox extension.