An Open Source Solution for Usability testing software

When looking for usability testing software at my new position, I naturally turned to the usability software companies that I know and have used in the past. However, I was faced with unique challenges that made finding the right software difficult. I was not testing web-based apps, so I was not looking to products such as UserZoom etc. I don't have a Mac at work so, I wasn't going to be using Silverback. I need to support two cameras as well as to record the desktop, so I could not use Morae. And finally, I was going to be testing on Linux which left me with, um..nothing.