Google Feed Server is an open source
Atom Publishing Protocol server based on the
Apache Abdera framework. Google Feed Server provides a simple back end for data adapters, which allows developers to quickly deploy a feed for an existing data source such as a database.
Google Feed Server also provides the Feed Server Client Tool (FSCT), which lets developers perform create, receive, update, and delete (
CRUD) operations on a Feed Server feed.
URL: http://code.google.com/p/google-feedserver/