ATPM 14.09 - Next Actions: Master List for September is a catalog of OS X apps for "getting things done" -- what we old timers new as a task list (plus).
Now it includes an 'iPhone Presence' indicator. It's a terrific list.
BTW, I'm still pretty happy with the combination of Toodledo (web site) and iPhone ToDo.app. Not cheap, but being able to work with tasks from any computer is worth something.