headstak is a stack-based task list. Before you start a task, or when you are interrupted while working on a task, you push the current job onto a stack. When the interruption finishes, or when the task is complete, you pop it from the stack - leaving you facing the job you were working on beforehand at the top of the stack. Run it and it should appear on your status bar as a little stack of stuff on a head. It is activated with the Control-Command-0 global hotkey.
ActoTracker is an application for keeping track of activities on your desktop so that you don't have to. Think of it as an app for bookmarking desktop documents and applications. It can also bookmark things that are not usually tied to a URL such as Outlook email message or Filemaker records. It can be extended to handle additional applications by writing custom AppleScript plugins. ActoTracker is somewhat inspired by the GNOME Activity Journal (Zeitgeist framework), and it tries to solve a similar kind of problem for the end user, although in a different way.
Shortcuts is a tool to make your own keyboard shortcuts for frequently used items and actions. It can set shortcuts for the most popular applications like iCal, iTunes, and Mail. It can set shortcuts for actions that control the system, volume, screen, and playback of music and video. Shortcuts can be used to open frequently used files and documents, scripts that you run regularly, and your favorite Web sites.
NuKit is a productivity and timesaving toolkit that provides a Launcher, Tweaker, Shortcuts, Window Mover, Advanced Calculator, Real Zoom, and Real Close. The Launcher is a multifunctional launch panel to open applications, Web sites, and search engines, run commands, perform calculations, and check the dictionary. Shortcuts lets you assign system wide shortcuts to any applications, Web sites, and files, and to execute system actions and scripts.