As good as OS X memory management may be, if you run your system for long periods of time without shutting down you'll likely see an increasing number of spinning beach balls as your uptime counter ticks away. When applications quit – especially big, memory-hungry applications – they often leave your RAM fragmented and unavailable to subsequently launched apps. The solution is generally a reboot, but if you're looking for something a little friendlier and less time-consuming, iFreeMem is a superb solution. The utility was just updated to version 2.0 with full Leopard support.

I'm a long-time user of iFreeMem. On my MacBook Pro with 3 GB of RAM, it can generally clear up about 800 MB (sometimes more) after I quit a long session in apps like Photoshop and Motion. And it's rescued me on numerous occasions where I've found myself with three or four MB free and everything starts slowing to a crawl. I just loaded version 2 and it's faster and more efficient than ever. Good stuff.

The author has signed up with Trial-Pay, which I can't say improves the image of the app or increases my respect for it, but it does provide one option to get a $19 application for free. In light of the overall positive nature of this post, I won't delve into my opinions on Trial-Pay and its ilk. Suffice to say that I'm a happy customer of iFreeMem who paid full price and have never regretted it. Oh, and the 2.0 upgrade is free for users of previous versions, you just have to re-enter your registration code. You saved it, right?

Get a feel for whether or not iFreeMem would save some reboots for you with a 15-day, fully functioning trial.