DoIt is a small application to manage categorized to do lists. Each to do item can be linked with a file on your computer, a URL, such as the address of a website, or a contact from your address book. The linked item can be opened directly from the DoIt window. DoIt items can also include notes, priorities and deadlines, which can be set as reminders in iCal. DoIt is applescriptable, includes plugins for Address book to quickly set contact reminders and a plugin for Quicksilver to allow rapid creation of DoIt items from the Quicksilver interface.