LinkStart is an application manager. It allows you to move applications to expansion cards and run them transparently as if they were on the device. It may take a little longer for application to start from the card, depending on the size of application and its data, but you save precious RAM space!
Linkstart takes a different approach to the options available in some newer Palm OS versions. It creates a small link application that looks exactly like the original one in the launcher and can be treated as the original application. When this link is launched it loads the original application from card, launches it, waits till it quits, and saves application data back to card.