CouchDB

I'd heard the CouchDB name but but didn't realize that it's an HTTP-accessed, Erlang-implemented, schema-free, distributed datatabase - and it supports Javascript for defining views. Time to dive in!

From Apache CouchDB: The CouchDB Project:

"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."