From Tweak Now:
A freeware program that is designed for Windows 95/98/NT/2000. RAM Idle will increase your performance by making more physical memory available for your system. This program will automatically free up a set amount of RAM and defragment it when a minimum of free RAM is reached. This program will enables your applications to load faster and more responsively. When you run RAM Idle for the first time, it will find and define the recommended levels for your system. However you may need to define these manually to find the best combination that will give you the best performance for your system. The program includes various additional features, such as the ability to display free memory in the try icon, show the percentage of free RAM and page file, automatically start with Windows, and ability to free up amount of RAM manually from the popup menu.
What's new in this version:
Increases overall system performance and avoid system from crash by making more RAM available Recovers RAM automatically when the minimum limit is reached. Recovers RAM automatically every x minutes Recovers RAM automatically at startup Recovers RAM manually from RAM Idle pop-up menu Sound effects available