As Sandro noted, snapshot of all releases can be found under tags:
As I said, the problem with that is that none of the Eclipse files are there (.project, .classpath, .settings). Which means that if I try to do Import | Existing Projects into Workspace, Eclipse thinks there are no projects there. Is there some reason they're in trunk but not in the snapshot?
I guess I can browse in trunk for now, but I was hoping to browse something that exactly matched the published jars.