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Logo Diigo.svg
Type of site
Social Annotations, Highlighting and Social Bookmarking
LaunchedJuly 4, 2006
Current statusActive

Diigo /ˈdɡ/[1] is a social bookmarking website that allows signed-up users to bookmark and tag Web pages. Additionally, it allows users to highlight any part of a webpage and attach sticky notes to specific highlights or to a whole page. These annotations can be kept private, shared with a group within Diigo, or be forwarded to someone else via a special link. The name "Diigo" is an acronym from "Digest of Internet Information, Groups and Other stuff".[2]

Premium account holders can perform full-text searches of cached copies of bookmarks. A full-text search also searches page URLs, tags and annotations.[3] This means that premium account holders can choose to omit tags that already appear in the text of a page to be bookmarked (although text inside images cannot be searched).

The launch of Diigo met with mixed responses, from the unimpressed[4] to the enthusiastic.[5] Diigo beta was listed as one of the top ten research tools by CNET in 2006.

Outside the website, Diigo's graphical user interface includes an optional bookmarklet, or a customizable toolbar, with various search capabilities. Highlight is enabled by a menu, that can either appear automatically when content is selected, or be embedded into the context menu.

In March 2009, Diigo acquired web-clipping service Furl from Looksmart for an undisclosed price.[6][7]

The site also has an extension available on the Chrome Web Store.[8]

On October 25, 2012, the diigo.com domain was hijacked.[9][10] An unknown attacker changed the authoritative nameserver records ("NS records") for DNS zone DIIGO.COM, temporarily giving control to nameservers at AFRAID.ORG, and causing traffic to be misdirected.[11]

Mobile apps for Diigo are available on iOS, Android[12] and Windows Phone 7.


  1. ^ Diigo V4: Research ~ annotate, archive, organize (flash) (Presentation). Diigo. 2009-09-24. Event occurs at 0:00.
  2. ^ "Diigo help". Diigo.com. Retrieved 2016-08-11.
  3. ^ "Full text search". Help.diigo.com. Retrieved 28 October 2010.
  4. ^ "Diigo Launches, Nobody Cares". Mashable.com. Retrieved 2016-08-11.
  5. ^ "Diigo Offers "Social Annotation" Tool - Search Engine Watch". Searchenginewatch.com. Archived from the original on 2008-10-10. Retrieved 2016-08-11.
  6. ^ Wauters, Robin. "Diigo Buys Web Page Clipping Service Furl Away From LookSmart". Social.techcrunch.com. Retrieved 2016-08-11.
  7. ^ "Archived copy". Archived from the original on 2009-03-12. Retrieved 2009-03-09.CS1 maint: archived copy as title (link)
  8. ^ "Archived copy". Archived from the original on 2011-04-14. Retrieved 2011-02-13.CS1 maint: archived copy as title (link)
  9. ^ "Archived copy". Archived from the original on 2012-10-28. Retrieved 2012-10-25.CS1 maint: archived copy as title (link)
  10. ^ [1][dead link]
  11. ^ "diigo.com historical whois information". Who.is. Retrieved 2016-08-11.
  12. ^ "Diigo for Android". Androidblip.com. Retrieved 2016-08-11.