Web site developer Browser Media lists their many association clients here. It is an impressive list. And it seems that they are talking up a new version of their own CMS application.
Here is a list from their site of client case studies.
And here is another list of their clients, that shows off a really lovely affect. Mouse over each client to see how it works.
A Browser Media executive recently contributed an article (PDF) on tips for assocations buying technology, for Associations Now, the ASAE magazine. So they seem to be well-entrenched in the association market.
The Washington Post did a piece here on Browser Media's creation of a hot new Web site for the University of Maryland's women's basketball team.