The ending RSS stands for Rich Site Summary or Really Simple Syndication and can be found on many websites. This XML-based format was developed to easily make the headlines or headings of articles or even the articles themselves of a web page accessible.
Many browsers have an aggregator part that can evaluate and display such RSS feeds. A user can subscribe to an RSS feed and then receive the content provided by the website in the aggregator without having to visit the website.
There are different versions of the RSS standard. An earlier one was called RDF.
Most often resolving problems with opening RSS files is very simple. Just install an appropriate program that supports such files. All of the listed programs support RSS files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of RSS files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate RSS files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Mozilla Firefox applications is not on the list, select "Browse" option in order to manually locate the directory where Mozilla Firefox has been installed.
Sometimes problems with opening RSS files may not lie with the application itself, but can arise due to other causes, such as: