Forum update:

name changed CouchDB (+Node.js) -> Node.js - V8 JS Arc Reactor

Legacy content:

CouchDB
- uses JSON to store data + file attachments
- JavaScript as its query language using MapReduce and HTTP for an API
- no tables, each database is a collection of independent documents
- built-in support for user accounts & permissions
- built-in views (so you can make websites with CouchDB only, see http://couchapp.org )

jQuery $.couch API
http://bradley-holt.com/2011/07/couchdb-jquery-plugin-reference/ (examples)
http://daleharvey.github.com/jquery.couch.js-docs/symbols/index.html (descriptions)

other:
http://guide.couchdb.org/ - book
http://wiki.apache.org/couchdb/ - wiki
http://couchdb.apache.org/
http://couchdb.apache.org/#download - download (src/win/mac)

free hosting:
http://www.iriscouch.com/
https://cloudant.com/
https://openshift.redhat.com/ - Node.js hosting (bez couchdb)

previous node name: CouchDB (+Node.js)