MaxMem

AnalogX MaxMem is a realtime physical memory management program that automatically ensures that you always have as much physical memory available as possible. It does this by allowing you to set minimum amounts of memory to be made available under certain circumstance, and then passively monitoring how much system resources are being used. It runs in the system tray, and also shows you exactly how much memory you have available, plus graphs how you've been using memory over the last 60 seconds.