2collab 2collab was a scientific social network by Elsevier, launched in 2007 and discontinued on 15 April 2011.
A.nnotate A.nnotate is a web service for storing and annotating documents.
AddThis AddThis is a web technology company based in Vienna, Virginia, United States.
AddToAny AddToAny is a social bookmarking platform founded by Pat Diven II that can be integrated into a website with the use of a web widget.
Areapal Areapal is an instant networking & social news website based in Chennai, India.
BibSonomy BibSonomy is a social bookmarking and publication-sharing system.
BookmarkSync BookmarkSync is an automatic synchronization service that allows users to access their bookmarks or favorites from any computer or any web browser.
Broowaha BrooWaha is an online citizen newspaper with a focus on local news.
CiteULike CiteULike is a web service which allows users to save and share citations to academic papers.
COLOURlovers Colourlovers is a social network service, blog, and international creative community that focuses on color inspiration and color trends for both personal and professional creative projects.
Colourlovers Colourlovers (styled COLOURlovers) is a social network service, blog, and international creative community that focuses on color inspiration and color trends for both personal and professi...
Connotea Connotea was a free online reference management service for scientists, researchers, and clinicians, created in December 2004 by Nature Publishing Group and discontinued in March 2013.
Delicious (website) Delicious (formerly del.icio.us) is a social bookmarking web service for storing, sharing, and discovering web bookmarks.
Digg Digg is a news aggregator with an editorially driven front page, aiming to select stories specifically for the Internet audience such as science, trending political issues, and viral Internet issues.
Diigo Diigo is a social bookmarking website which allows signed-up users to bookmark and tag web-pages.
Enterprise bookmarking Enterprise bookmarking is a method for Enterprise 2.0 users to tag, organize, store, and search bookmarks of both web pages on the Internet and data resources stored in a distributed database or...
Evernote Evernote is a suite of software and services designed for notetaking and archiving.
Faves.com Faves is a social bookmarking and networking software that installs a single browser button for users to "fave" a webpage, making a link to the page part of their Faves profile.
Flattr Flattr is a Sweden-based microdonation provider founded by Peter Sunde and Linus Olsson and launched in March 2010.
Folksonomy A folksonomy is a system of classification derived from the practice and method of collaboratively creating and translating tags to annotate and categorize content; this practice is also known a...
Furl Furl (from File Uniform Resource Locators) was a free social bookmarking website that allowed members to store searchable copies of webpages and share them with others.
GiveALink.org GiveALink is a non-commercial social bookmarking website.
Gnolia Gnolia, named Ma.gnolia until 2009, was a social bookmarking web site with an emphasis on design, social features, and open standards.
Google Bookmarks Google Bookmarks is a free online bookmark storage service, available to Google Account holders.
Hacker News Hacker News is a social news website that caters to programmers and entrepreneurs (i.e.
Licorize Licorize is a social bookmarking website which allows signed-up users to bookmark and tag web-pages and parts of pages' contents.
MemeStreams MemeStreams is an early social networking website, online community, and blog host that was established in 2001 by Industrial Memetics,.
Menéame Menéame is a Spanish social news website based in communitary participation, made for users to discover and share content from anywhere on the Internet, by submitting links and stories and votin...
Mister Wong Mister Wong is one of the largest European free social-bookmarking web services.
NewsTrust NewsTrust is a nonpartisan, non-profit news network that operates a web site where users are able to reference news stories, rate those stories according to quality of journalism, post reviews a...
Newsvine Newsvine is a community-powered, collaborative journalism news website which draws content from its users and syndicated content from mainstream sources such as The Associated Press.
Oneview oneview is an English and German-speaking application for social bookmarking.
Pearltrees Pearltrees is a visual and collaborative curation tool that allows users to collect, organize and share any URL they find online as well as to upload personal photos and notes.
Pinboard (website) Pinboard (also called Pinboard.in) is a social bookmarking website developed and run by Maciej Cegłowski.
PopUrls PopUrls is a mashup of the web's most visited social news sites and portals that encapsulates headlines of its sources in near-realtime.
Propeller.com Propeller was a social news aggregator operated by AOL-Netscape.
Reddit Reddit stylized as reddit, is an entertainment, social networking service and news website where registered community members can submit content, such as text posts or direct links.
Regator Regator.com is a curated blog directory and search engine.
ShareThis The ShareThis button is an all-in-one widget that lets people share any content on the Web with friends via e-mail, AIM, or text message.
Simpy Simpy was a web-based personal and social bookmarking service.
SiteBar SiteBar is a free online bookmark manager that is available in more than 20 languages.
Social bookmark link generator A social bookmark link generator (or tag generator) is software that generates a code that can be added to web pages and/or blogs to facilitate bookmarking the web content on social bookma...
Social bookmarking A social bookmarking service is a centralized online service which enables users to add, annotate, edit, and share bookmarks of web documents.
Spool (software company) Spool was a free social bookmarking program and social network that was launched in October 2011 at TechCrunch Disrupt.
StumbleUpon StumbleUpon is a discovery engine (a form of web search engine) that finds and recommends web content to its users.
Sturvs Sturvs is a Nigerian content aggregator and blog network.
Taringa! Taringa! does not allow the publication of sexually explicit material as a new site called Poringa! was created.
Twine (website) Twine is an online, social web service for information storage, authoring and discovery.
Wallshops Wallshops is an Oregon based startup focused on creating an online shopping experience similar to real-life fashion malls.
Wink Technologies Wink Technologies is the operator of Wink, a community-based social search engine.
Yahoo! Buzz Yahoo! Buzz was a community-based news article website, heavily derived from Digg, that combines the features of social bookmarking and syndication through a user interface that allows editorial...
Yardbarker Yardbarker is a San Francisco, California based subsidiary of FOX Sports Interactive that primarily runs a network of sports websites known as the Yardbarker Network, and additionally owns and o...