Apache CouchDB
in
Apache CouchDB is a document-oriented database written in Erlang. It is not a normal RDMS (like PostgreSQL and MySQL) but stores it's information in JSON documents that can be accessed though a RESTful HTTP API. It is similar to Amazon SimpleDB, Google BigTable, and Lotus Notes. Similar to Notes it allows for the creation of applications (written in HTML and JavaScript) that can interact with the data, CouchApps.
