Social bookmarking websites

Digg (stylized in lowercase as digg) is an American social bookmarking news aggregator, with a feed that displays the internet's most popular content (Most Dugg), Newest, Trending, and content that’s "Heating up." It was re-launched in its current form in June 2025.

social bookmarking web service

Technorati is a search engine and a publisher advertising platform. Technorati launched its ad network in 2008. In 2016, Synacor acquired Technorati for $3 million.

product discovery website

Diigo 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".

AddThis was a free social bookmarking service that could be integrated into a website with the use of a web widget. Once the widget was added, visitors of a website using the service could bookmark or share an item using a variety of services, such as Facebook, MySpace, Pinterest, and Twitter. AddThis collected users' behavioural data, even if they do not share anything. The site reached 1.9 billion unique visitors monthly and was used by more than 15 million web publishers. The service operated under companies including AddThis, Inc., AddThis, LLC, and Clearspring Technologies, Inc. until the

website for social-bookmarking

Voat Inc (; styled VOΛT) was an American alt-tech news aggregator and social networking service where registered community members could submit content such as text posts and direct links. Registered users could then vote on these submissions. Content entries were organized by areas of interest called "subverses". The website was widely described as a Reddit clone and a hub for the alt-right. Voat CEO Justin Chastain made an announcement on December 22, 2020 that Voat would shut down. The site was shut down on December 25, 2020.