Purge

Your Mac is running slow? You get every time the spinning ball? You have upgraded to Lion but now you are unsatisfied by it's performance and RAM management?

Here it comes Purge, the first free RAM optimizer for Mac OS X. It uses the core technology of OS X for freeing up RAM for you in a few seconds. If you don't believe it works, go to Activity Monitor in the System Memory section, launch Purge and see the results by yourself.