Annotea is a W3C LEAD (Live Early Adoption and Demonstration) job under Semantic Web Advanced Development (SWAD). Annotea enhances collaboration through shared metadata based Web annotations, bookmarks, and their combinations. By annotations we signify comments, notes, explanations, or other types of external remarks that can be attached to any Web document or a chosen part of the document without actually needing to touch the document. When the user gets the document he or she can as well load the annotations attached to it from a chosen annotation server or several servers and see what his peer group thinks. Likewise shared bookmarks can be attached to Web documents to help organize them under different topics, to simply find them later, to help come across related material and to collaboratively filter bookmarked material.
Annotea is open; it uses and helps out to advance W3C standards when possible. For example, we use an RDF based annotation schema for telling annotations as metadata and XPointer for locating the annotations in the annotated document. Likewise a bookmark schema describes the bookmark and subject matter metadata.
Annotea is part of the Semantic Web efforts. It gives a RDF metadata based extendible framework for rich communication about Web pages while offering an easy annotation and bookmark user interface. The annotation metadata can be stored locally or in one or additional annotation servers and presented to the user by a client competent of accepting this metadata and capable of interacting with an annotation server with the HTTP service protocol.
The first client execution of Annotea is W3C's Amaya editor/browser. Nothing prevents other clients from implementing these capabilities as well. The present Amaya user interface for annotations is obtainable in the Amaya documentation. Other projects (Firefox client, PHP work, etc) will be added soon.
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