I own all the major Program Launchers and Task Managers for Pocket PCs, including such notables as Spb Pocket Plus and iLauncher, just to name two. And, having participated in beta testing products for the developers of these products, I can assure you they are highly committed to quality and great service. I like all of their products.
But, these programs have a lot of features, and the general rule for features is: the more features a program has, the more memory it takes up.
When it comes to program memory on a Pocket PC, I like programs that are lean, and that is one reason I like Magic Button. It is not a program launcher, but it does close programs completely when you hit the close button and it does let you easily switch between open programs. As shown in the following screen shot (taken on my Dell x51v), you can use it to close all programs, turn off your PPC, or even reset it. You can also close individual programs with it, of course. And, it will let you view running programs and to see how much (little) memory you have left.

On another day, we’ll cover how I get along nicely without using a program launcher.
What’s your favorite PDA utility?