I mentioned these over on Keith Hart's page, but I think they deserve a repost:
One of the goals I see for OAC is to facilitate organizing of peer reviewed journals and academic conferences outside of, or in addition to, those official ones which happen within various associations, such as the AAA. For this I see two great resources:
1. Open Journal Systems
2. Open Conference System
While these tools serve the above-stated purpose, we would need some kind of central hosting and technical support if we want them to be adopted by anthropologists who are not technically savvy.