Apache CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP/JSON API. Among other features, it provides robust, incremental replication with bi-directional conflict detection and resolution, and is queryable and indexable using a table-oriented view engine with JavaScript acting as the default view definition language. - xero

Podcast episode on CouchDB, interview with Jan Lehnardt http://twit.tv/floss36 - Micah Wittman

Thanks Micah! - xero