It transforms a variety of feeds into a standardized RSS, Atom, or JSON format[1] and distributes "pushes" them via WebSub or XMPP.

Superfeedr has remained online and available and continues to refer to Notifixious in the terms of service for the site.

Superfeedr acts as a “default” hub that works for an RSS or Atom feed, whether the publisher supports the protocol or not.

Trackers, a new type of user application that subscribes to search queries, was added to Superfeedr in April 2015.

The tracking feature (a prospective search engine) is scaled to parse millions of feeds and their metadata to add extra filtering options.