For Pylons users:
About a year ago, Chris Moos came up with a nice tutorial on how to integrate Pylons with CouchDB. Well, times have changed: Pylons is now 1.0 (thus, syntactical differences), and I’m into MongoDB for my datastore. This document is revised/edited/rewritten/and updated for MongoDB.
Django users seem to be a bit more active in the NoSQL space though.
Original title and link: Pylons & MongoDB: User Registration & Login (NoSQL databases © myNoSQL)