I finally managed to get my hands on the Reaver Pro software and initial speculations that it was running Linux were correct. Ubuntu 10.04 to be in-fact. I used Parallels Desktop for virtualisation and it worked quite well. It took a few minutes to boot but when it did it entered the Reaver Pro GUI. It is a web interface which surprises me and it uses the Firefox broswer. I had no problem with my RTL8187L device and it was able to scan for networks and crack pins. I was able to access the Ubuntu desktop by clicking alt+F9 to minimise the window. It has a bunch of other software installed which is not really needed. Openoffice is one example of something that is not needed.
Think about this before you download and waste your time:
There is nothing pro about Reaver Pro. It is purely for beginners and your best bet for a Pro version would be to use command line reaver or tinker with expert settings wrapped in a GUI called Inflator which you can find here. If you don't have the hardware, buy a compatible ALFA AWUS036H or AWUS036NHA device online and save yourself the money.
If you still want it, you can Download Reaver Pro here, We also offer good technical support if you need it. This is my video review, enjoy: