Ta-da List has been discontinued. Similar sites and apps include Todoist, which has a free version. Other options are ToDoList, Remember The Milk, Org mode and Things. You're spoiled for choice with Todo List Managers like Ta-da List: we list more than 50 alternatives for Windows, Mac, Android, iPhone and Linux.
TaskAgent is a simple to-do list manager that saves its lists as plain text files. While Dropbox syncing is optional, the benefit is that you can edit your lists from outside the app using your favorite text editor and then sync any changes back into the app.
United States
Todoist Wall is a todo list web app that works offline and syncs with your Todoist account. Add the web app to your iPhone home screen to activate the fullscreen view. It is designed for the iPhone's small screen and touch interface and starts up fast.
