Looking for a keylogger

Im looking for a keylogger to use to monitor my network. My wife and I are going through hard times and I have a feeling its due to her talking to someone else the way she has been acting is very suspicious lately. I have no solid proof at the moment but I would like to be sure before I file any paperwork. Rather than tamper with her laptop and go into it I would rather just get a good keylogger to run on my server and watch the network.

I need something that will allow me to watch each device and monitor the ones I choose. Is there one out there that is decent and which are recommended?

 

You may want to talk to a lawyer first. What you want to do may be a crime in your locality.