This exploit framework is nicely designed and has a somwhat object oriented approach.
Browser based exploit code is broken down into seperate modules. Its statistics engine logs several important user variables such as IP, Browser and OS version. By default, it performs a check of the visiting IP to determine if it's already been seen and if so then avoids further interaction with that session.
The people who wrote this framework (IDT Group), or at least that's their header on top of every source file, know what they're doing. Their code layout and some documentation is displayed in a manner often seen in professional programming projects.