Once the installation is complete, you’ll be able to delete all of the files required for the set up, but you’ll still be using approximately 13GB of disk space to run IE 9. You will require approximately 26GB (yes, gigabytes) of free space in order to install IE 9 using the method outlined below. Important: There are a couple of things you should know before you undertake this (quite easy, albeit lengthy) endeavor. Internet explorer free download - Internet Explorer, Google Toolbar for Internet Explorer, Adblock Plus for Internet Explorer, and many more programs. Internet Explorer for Mac can be easily substituted by many similar internet browsers like the ones listed below. Unfortunately, Mac version of IE has been discontinued and it is no longer available for Mac users. Internet Explorer by Microsoft is one of the most popular web browsers worldwide. This detailed guide will take you every step of the way through installing Internet Explorer 9 on your Mac – using nothing but free software.