Ghost Action is a new Mac application for keeping track of your to-dos using the simple and stress-free Getting Things Done method.
Features:
• Group to-dos according to project or context
• Synchronize with any iSync compatible device such as a PDA, an iPod or a phone
• Both contexts and projects are synchronized
• Full two-way synchronization with iCal and .Mac without iCal running (using Sync Services)
• Attractive and easy to use Cocoa user interface
• Full keyboard navigation
• Printing of to-do lists
• Developed for Mac only