One of the most commonly found file formats is the XML format. For those to you who are new to this, XML is a text-based markup programming language derived from Standard Generalized Markup Language (SGML). XML is also known as Extensible Markup Language.
Now, if you own a Mac or Macbook device, and if you want to open XML files, you will have to rely on a third party XML reader, and the best one we have tried so far is Xmplify.