Yes I had seen that, but <Programming> seems to be having its first conference this year, and Modularity's proceedings seem to be closed up in the ACM Library. So it was difficult to ascertain anything about AOSA and it's mission as an organization from that info.
Thanks that's very informative! There are many elements of it that might have been interesting to include on the Journal site itself. It's great to see new open-access Journals opening up!
"AOSA is a non-profit organization whose mission is to be the primary sponsor for the ‹Programming› Conference and the Modularity Symposium."