It closed on 30th of November 2023 because it was no longer generating enough revenue to support the costs of maintaining it.
When a URL of a web page was entered, the service makes a local copy of the HTML and stylesheet.
The service offered a browser bookmarklet to facilitate making snapshots of web pages.
Early development of A.nnotate was enabled by proof-of-concept funding to Textensor Limited, from the Scottish Government for a project on authoring structured content from text .
[2] The resulting software, "Notate" is described in a white paper from 2007[3] which included support for semantic web authoring.