"bzr-feed is a Python script written by Morten Frederiksen which generates Atom feeds from Bazaar repositories. Users and other developers can subscribe to the feed and receive notifications of new revisions automatically..."

While you can code an RSS feed by hand, you'd be better off using a dedicated tool like ListGarden. It can help you to not only create and manage RSS feeds, but also to do more advanced tasks like publish the feeds on a remote server, back up the feeds, generate an HTML page, and much more.

"While RSS feeds are no problem with Gnus and the nnrss back end, Atom is a little bit more complicated. You can either create a w3m shimbun for the feed, or you convert the Atom feed to RSS. While the former requires a bit of ELisp knowledge, the latter can be done with XSL..."

A news aggregator eliminates the need for surfing the Web as much. Instead of going to all the Web pages you have bookmarked to read your favorite blogs, news, or media presentations, you can simply add an RSS/RDF or Atom syndication format to Liferea and have all the news feeds at your command.

RSS is a family of Web feed formats used to publish frequently updated content such as blog entries, news headlines, and podcasts in a standardized format. An RSS document (which is called a “feed”, “web feed”, or “channel”) contains either a summary of content from an associated web site or the full text.

Written in Java, RSSOwl is a powerful feed reader for Linux, with support for RSS, RDF and Atom feeds, with a lot of features and customisation options.

gPodder is a Podcast receiver/catcher written in Python and pyGTK. It manages podcast feeds for you, and automatically downloads all podcasts from as many feeds as you like. If you are interested in Podcast feeds, simply put the feed URLs into gPodder and it will download all episodes for you automatically.

"This is actually pretty straight-forward if you’ve got things set up properly. I had a hard time at first, because I had the “sites” framework enabled but I wasn’t using it the right way.

Feedburner is often a service that can change your blog feed in to content for easier to be read or distributed directly into various feed services. Many advantages in using Feedburner, several of which are feedburner can certainly send the feed contents automatically on the subscribers through email, knowing the quantity of subscribers, compatible with many feed reader services and more.