The OPEN/Metis Framework - Includes papers, links and download. The full methodology definition can be explored online. - http://www.verdewek.com/openmetis/
OPEN Process Framework - Documents the OPF development process. Includes guidelines, glossary, and links. - http://www.donald-firesmith.com/
The OPEN Website - A third generation, fully object-oriented methodology encapsulating business issues, quality issues, modeling issues and reuse issues. Supersedes the MOSES methodology. - http://www.open.org.au/