Microsoft To-Do 2.1

It helps you keep track of project due dates, business meetings, etc.

Priority Matrix distinguishes itself from traditional linear to-do lists in that it excels at guiding the user's focus to the tasks with the highest..

Cash Organizer is a unique personal finance manager and home accounting planner.

Free

AppleScript app for adding or removing tasks from the launchd database.

Free

App provides you a nice interface for managing your small projects.