System clock which comes with the calendar, countdown and alarm. This clock supports both 24 hours or 12 hours option to display the time as well shows you the time of different cities.
Edit the system configuration framework using this tool. Multiple parameters can be created, modified quickly and can be stored in a central plist file.
A plug-in tool for bookmarking system which can be accessed through Acrobat application and it allows viewing and printing bookmarks with many optional settings.