You could have downloaded iFuntastic 6.6.5 for Mac from our application library for free. The actual developer of this Mac application is bitSplit Enterprises. The application lies within System Tools, more precisely File Managers.
From the developer:
Funtastic strives to be your one-stop application to customize your phone's look and functionality.
However, since you can't do very much (but some!) to a shackled phone, a necessary evil has been the unshackling.
iFuntastic provides several ways to unshackle the phone as well as utility functions to restart the phone, download firmware files etc.
You may want to check out more Mac applications, such as getTunes or SharePoints AutoMounter, which might be related to iFuntastic.