Category
page 1Internet properties disestablished in 2012
Knol
Knol was a Google project that aimed to include user-written articles on a range of topics. The lower-case term knol, which Google defined as a "unit of knowledge", referred to an article in the project. Knol was often viewed as a rival to Wikipedia.

Megaupload
Megaupload Ltd was a Hong Kong–based online company established in 2005 that operated from 2005 to 2012 providing online services related to file storage and viewing.
Google Videos
a video search engine from Google
Windows Live
former brand name for Microsoft online services
Joost
Joost () was an Internet TV service, created by Niklas Zennström and Janus Friis (founders of Skype and Kazaa). During 2007–2008 Joost used peer-to-peer TV (P2PTV) technology to distribute content to their Mozilla-based desktop player; in late 2008 this was migrated to use a Flash-based Web player instead.

MobileMe
MobileMe (formerly .Mac and originally iTools) is a discontinued subscription-based collection of online services and software offered by Apple Inc. All services were gradually transitioned to and eventually replaced by the free iCloud, and MobileMe ceased on June 30, 2012, with transfers to iCloud being available until July 31, 2012, or data being available for download until that date, when the site finally closed completely. On that date all data was deleted, and email addresses of accounts not transferred to iCloud were marked as unused.
Picnik
Picnik was an online photo editing service which was acquired by Google in 2010. It was headquartered in Downtown Seattle, Washington, United States.
Ovi
former Internet services by Nokia
Jaiku
Jaiku was a social networking, micro-blogging and lifestreaming service comparable to Twitter, founded a month before the latter. Jaiku was founded in February 2006 by Jyri Engeström and Petteri Koponen from Finland and launched in July of that year. It was purchased by Google on October 9, 2007.

Demonoid
Demonoid is a BitTorrent tracker and website founded in 2003 to facilitate file-sharing–related discussion and provide a searchable index of torrent files. The site underwent intermittent periods of extended downtime in its history due to the occasional need to move the server, generally caused by cancellation of ISP service due to local political pressure.
Google Health
division of Google, dealing with personal health information
ZunZuneo
ZunZuneo was an online social networking and microblogging service created by the United States Agency for International Development (USAID) and marketed to Cuban users. Following recommendations by the Commission for Assistance to a Free Cuba, it was covertly developed as a long-term strategy to encourage Cuban youths to revolt against the nation's government, fomenting a political spring. The service officially began operating in 2010 but ran out of money two years later. Because of its clandestine and subversive nature, it became a target of criticism.
Gowalla
Gowalla is a location-based social networking service. It originally launched in 2007 and closed in 2012, but was relaunched on March 10, 2023. Users are able to check in at "Spots" in their local vicinity, either through a dedicated mobile application or through the mobile website. Checking-in will sometimes produce virtual "items" for the user, some of which are developed to be promotional tools for the game's partners. As of November 2010 there were approximately 600,000 users. In January 2021, Gowalla made an announcement that the app is coming back in 2022.
Microsoft Academic Search
former academic search engine
library.nu
Library.nu, previously called ebooksclub.org from 2004 to 2007 and Gigapedia from 2007 to 2010, was a popular linking website. It was accused of copyright infringement and shut down by court order on February 15, 2012. According to the takedown notice, it hosted some 400,000 ebooks.
Yahoo! Widgets
Discontinued application platform
Yahoo! Meme
defunct website
Is Anyone Up?
defunct pornographic website
BTJunkie
BTJunkie was a BitTorrent web search engine operating between 2005 and 2012. It used a web crawler to search for torrent files from other torrent sites and store them on its database. It had nearly 4,000,000 active torrents and about 4,200 torrents added daily (compared to runner-up Torrent Portal with 1,500), making it the largest torrent site indexer on the web in 2006. During 2011, BTJunkie was the 5th most popular BitTorrent site.