Caroline Sutton and I have posted an updated version of our spreadsheet of society publishers with OA journals. For some background (but not up to date totals) see our article in the November SOAN.
Posted by
Peter Suber at 11/14/2007 03:57:00 PM.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.