In Pictures: 13 useful add-ons for Microsoft Excel...
TaskIt for Word 2013
TaskIt is a basic to-do list app that runs alongside Word 2013. Just enter into its textbox a simple description for a task you need to do, adding more one-by-one to build a list of them. Then click the checkmark box beside each task after you actually complete it.
In Pictures: 13 useful add-ons for Microsoft Excel and Word 2013