(via)
Argotic is a collection of Microsoft.NET class libraries that implement common web content syndication specifications such as RSS 2.0 and ATOM 1.0. With the Argotic components, consuming syndication feeds or generating your own custom feeds has never been easier. Argotic has been designed to provide developers with a flexible provider model for storing and retrieving syndication feed information to and from the back-end database of their choice. Argotic also provides an extensible framework that allows developers to easily handle the large number of extensions in use by today's syndication specifications.
.net
atom