Task Till Dawn is a free task scheduler which can execute your repetitive tasks (i.e. open files or applications) at specified times or intervals. For example, use Task Till Dawn to automatically let iTunes download the newest Podcasts at a specified time. Or let it backup your important files every day. Needless to say, tasks can also be executed manually.
Solitaire Till Dawn X - a collection of solitaire card games.
Task organizer that helps students manage their homework.
Keep track of the time you spend doing a certain job.
Register all the jobs you have done.
AppleScript app for adding or removing tasks from the launchd database.