When you have so many things going on at once, a to-do list app can help you streamline and level up your productivity. Here are nine of our favorites.

Over a decade ago, a simple to-do list app called Clear launched to much fanfare due to how it capitalized on the smartphone's touch interface to build a ...

If my roommate and I used a collaborative to-do list app we could stay coordinated for the communal shopping, but we prefer different systems that can’t sync to each other.