A memory cleaner. The program will install and set it to run every 30 min via the windows task scheduler You can change this to any amount of time you like by simply going to the task scheduler in windows and changing any of the options you like.
Install it and your done! The program doesn't run in the back ground, once it does its job it closes and doesn't run again until the task scheduler runs it.
Tools and Utilities
Product page: here