I am very familiar with Couch CMS and would be interested in hearing what your specific needs are. You can also post to couchcms.com/forum (which I believe was built with Couch itself).
Couch doesn’t have the prettiest default GUI (admin panel, file manager, etc), but can be very powerful if you get to know some of its lesser know features like relations, data-bound forms, routes, and mosaics. You can even create fully functional “web apps” that users can create accounts, save documents, and so on, eliminating the need for Couch’s default backend. And there are lots of undocumented features at couchcms.com/forum.