Finding third party software embedded in a downloaded program is pretty common now days. This is a means of extra income for the author of the original program being downloaded.
The third party software can be avoided by using the "Custom" installation. This is apposed to the "Express" installation, this is usually the "suggested" means of installation.
By using the Custom installation you will see all of the third party software. There are usually two ways that this is presented. The most common, at least currently, is a listing of the title of the software and a check box to accept the installation. In these instances the check box has already had a check in the box. You will need to click on the box to remove it.
The other presentation of the third party software looks like what you would think is the program you downloaded. But there will be a accept or don't accept option usually found in the lower left portion of the page. You need to read the software description for each of these pages to be sure you don't install the third party software.
If you inadvertently install any of these third party software, you can use a program like AdwCleaner which usually will remove the unwanted software.
Please note: Clicking on the link above will automatically initiate the download of AdwCleaner from Bleeping Computer.
Edited by dc3, 23 January 2015 - 02:00 PM.