This is a Call of Duty Modern Warfare 3 Real Time Modifier or Cheat Trainer for the Playstation 3. Made with the PS3Lib dll library and open source!
This is a very simple RTM. I know there are much more complex programs available, but this is using the newest patch and should offer enough features to get you through the campaign and single player missions.
The source code is available at github.com/erfg12/PS3-Cheats.