Dropkick is a super simple todo task management app. Make a list of things that you have to accomplish and check them off as they are completed. Dropkick supports automatic syncing with the Dropkick for iPhone app (sign-up in the menu bar). Data syncing is secure of SSL.
What's new in Dropkick
Fixed printing being disabled on OS X 10.8 Mountain Lion
Fixed tasks not being deleted when pressing Delete key