No, THEY are obviously not producing something that gets enough publicity. Compared with CouchDB (which is not even that famous itself) all those are marginal

No, THEY are obviously not producing something that gets enough publicity. Compared with CouchDB (which is not even that famous itself) all those are marginal at best, with the possible exception of Seaside, and then again that's a framework. Where's the famous site built with it, like, say, Facebook was built in PHP and Twitter in Ruby/Rails(Scala), etc?