PSX is a framework for developing dynamic Web sites in PHP. The goal of PSX is to help you develop RESTful APIs serving Web standard formats like JSON, XML, Atom, and RSS. It has a focus on social technologies and provides classes to use and implement OAuth, OpenID, Opengraph, Opensocial, Opensearch, PubSubHubbub, Atom, and RSS.
PubwichFork is a Web application that allows you to aggregate your published data from multiple Websites and social services into a single HTML page. It is an improved version of the original application, since Pubwich is not actively maintained anymore. This fork fixed several bugs, adds filtering methods to the data streams, and enables output caching and post-output processing. Besides standard feed formats like Atom and RSS, PubwichFork supports Delicious, Youtube, Vimeo, Flickr, Last.fm, and more.