Planets are commonly associated with free and open source software projects, where they are used to collect posts from the various developers involved in projects. Create an account so you're ready to subscribe to some RSS feeds. Released under the Python License, Planet is free software. Some of the most popular RSS readers include Feedreader, Feedly, and The Old Reader. Planet uses Mark Pilgrim's Universal Feed Parser to process feeds in RDF, RSS and Atom format, and Tomas Styblo's htmltmpl templating engine to output static files in any format. There are several successors: Venus - started by Sam Ruby, Pluto - started by hackNY, a second project also named Pluto by Gerald Bauer, and most recently Moonmoon.

This cross-platform desktop RSS feed reader runs on Linux, Windows, and macOS, so you can easily access your news sources from any device. Planet was written in Python and maintained by Jeff Waugh and Scott James Remnant. RSSOwl is the ultimate news aggregator that offers a seamless way to organize, search, and read your RSS, RDF, and Atom news feeds. In online media a planet is a feed aggregator application designed to collect posts from the weblogs of members of an internet community and display them on a single page. A web feed is your favourite website, delivered to you automatically the way you want it, as soon as its available, and entirely free. It creates pages with entries from the original feeds in chronological order, most recent entries first. Planet is a feed aggregator that runs on a web server.

Web feed reader