Our website provides a free download of RSSOwl 3.7 for Mac. The application lies within Internet & Network Tools, more precisely RSS Tools. This free Mac application was originally developed by org.eclipse.
From the developer:
RSSOwl is a GUI desktop client (using SWT as fast graphic libary) that reads the RSS format from a URL or a local file.
You may want to check out more software for Mac, such as Portable RSSOwl OS X or Portable RSSOwl, which might be similar to RSSOwl.