Microformats - Simple data formats built upon existing and widely adopted standards. Overview, specifications, events, and discussion.
Project Xanadu - The original hypertext project. Includes a history of the project and gives credit to the early developers of markup languages.
YAML Ain't Markup Language (YAML) - A straightforward machine parsable data serialization format designed for human readability and interaction with scripting languages such as Perl and Python.
