The boys over at EQ Soft have just released a great new utility called EQ AltTab, that allows S60 3rd users to effortlessly switch between any open application with the quick press of a button (Or two in this case). As you can see in the image, it very closely resembles that of a Windows system and brings a whole new light to multi-tasking!
EQ AltTab also contains a very simple, yet effective UI to configure the main aspects of the application. The hotkey and icon size can easily be edited to suit the users personal requirements, and exceptions can even be made to allow certain applications to be ignored when displaying the selection window.
The Application itself runs seamlessly in the background with no indication of presense in the task manager at all and supports full automatic start-up upon booting the phone.
This application is not currently signed, and will need to be, before it can be used – See here for a quick guide on signing applictions