RAMpage is a Windows utility that displays the amount of available memory in the System Tray. It can also free memory; by double clicking the tray icon, by setting a threshold that activates the program automatically, or by having it run automatically when an application exits.

RAMpage Features
Frees memory automatically, on demand, or after an application finishes running
Very low active memory footprint, and very low resource and CPU usage
Can run "hidden", which further reduces memory and resource usage
Can be run from a batch file, or via a shortcut, to free memory on a "once off" basis
Easy to install, configure and automate