PopExtras 2.0 - consists of two parts, the first being a button which is attached to the status bar of the background application (eg Notepad).  Tapping this button will present you with a pop-up menu containing a user definable list of apps installed on the Newton. 

Tapping an app name will open that app!  The second part of PopExtras is the utility that is used to select which apps will be displayed in the popup button. This utility consists of a scrolling list which contains the apps installed on the Newton. Tapping on an item in the list will place a check to the left of the app name, tapping again will remove the check. Simple.  There is also a Clear button which will uncheck all items. It should also be noted that this version of PopExtras will only run on Newton 2.0 devices.