Web annotation

Evernote is a note-taking and task-management application developed by the Evernote Corporation. Evernote was founded in 2007 by Russian entrepreneur Stepan Pachikov. The company released the first public version of the Evernote web application on June 24, 2008. The service gained popularity for its ability to synchronize notes across multiple devices and platforms, allowing users to capture and organize information such as text, images, and web content.

American digital media company

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".