Metta Zetty Best task and to-do list manager I've ever used, and I've evaluated more apps than I can count. MLO includes quick-and--easy multiple task creation from the system tray, outline (tree) view, non-hierarchical list view that can be manually reordered (priceless), multiple filtering options and reminders. Can also be installed and run from within Dropbox. Highly recommended -- and well worth purchasing even without the discount.
