If so, how do i turn it on? I don't see it under Tools-> Options
If not, anywhere I can download it?
Here is the product matrix from the Microsoft Visual Studio 2012 site.
It shows that it is only available for the Ultimate edition.
Are you sure your coworker has it on Pro?
Intellitrace is not available in Microsoft Visual Studio Professional version, intellitrace is available in Visual Studio Ultimate edition only.
Yes, you can have Intellitrace in Visual Studio 2013 Professional, because there is a bug in Visual Studio licencing system. It happen in some circumstances.
来源：https://stackoverflow.com/questions/17153023/intellitrace-not-available-for-vs-2012-professional-edition